Blackwell returned to Australia needing a strong end to the WNCL season to ensure selection for the 2005 World Cup in South Africa.
In the four remaining round-robin matches, she made 96 runs in four innings, half of these coming in a five-wicket win over Queensland.
New South Wales met Victoria in the finals.
Blackwell was not required to bat in a seven-wicket win in the first match before making 13 and 24 as the reigning champions were dismissed for 71 and 109, losing the last two matches by five wickets and 50 runs respectively.
Blackwell ended the season with 214 runs at 26.75 and this was enough to secure retention in the national team despite her poor results during the Indian tour.
The Australians hosted New Zealand for three Rose Bowl ODIs in the western coastal city of Perth before the teams crossed the Indian Ocean to reach South Africa.
Blackwell was not productive in the trans-Tasman matches.
She made six and took 1/8 in the first match, and was then run out for 27 in the next game.
She was omitted for third match.

In the first match of the World Cup, Blackwell was persevered with by the selectors; she did not bat as England made 7/169 before rain ended the match.
This was followed by an encounter with New Zealand.
Blackwell scored 53 in Australia's 7/174, helping to set up a 32-run win.
In the third match against the West Indies, she was run out for a duck in a 79-run win, and was dropped for the 97-run win over the hosts.
The group stages ended with two easy victories.
Blackwell took 1/8 from two overs, her last international wicket, as Australia dismissed Sri Lanka for 57.
Since then she has bowled only 47 balls in senior matches.
She was not required to bat as Australia reached their target with eight wickets in hand.
The match against Ireland was similar as Australia achieved the target of 67 with all wickets intact.
The final pool match against India was abandoned without a ball being bowled due to inclement weather, and Australia met England in the semi-finals.
Blackwell scored 10 not out, helping to complete the closing stages of a five-wicket win.
In the final against India, she came in towards the end of the innings and made four not out as Australia amassed 4/215.
Australia bowled India out for 117 to win by 98 runs.
Blackwell ended the tournament with 67 runs at 33.50.

In the northern hemisphere summer of 2005, Australia toured England.
They started with a stopover in Ireland, and only the second of the three ODIs went ahead; the other two matches were washed out by persistent rain.
Blackwell made four not out as Australia made 3/295 and took a 240-run win.

Australia played two Tests in England.
In the First Test at County Ground in Hove, Sussex, Blackwell batted at No.
5 and played alongside identical twin sister Kate, who was making her Test debut.
She struggled in both innings, making five and nine and scoring at a strike rate of 20 or less in both innings.
After taking an 82-run lead, Australia set the hosts a target of 306.
Blackwell took two catches, her first at Test level, removing Claire Taylor and Jenny Gunn as the hosts ended on 7/172 to salvage a draw.
In the Second Test at New Road, Worcester, Blackwell made 20 and 14 as Australia ceded a 158-run first innings lead and eventually lost by six wickets after Blackwell's fall in the second innings left them at 5/46, still 112 runs in arrears.
She ended the series with 48 runs at 12.00.

Blackwell had mediocre results in the five ODIs, scoring 5, 27, 17 not out, 21 not out and 14 as Australia won 3–2.
She ended the series with 84 runs at 28.00.
Blackwell then played in Australia's inaugural Twenty20 international at the County Ground, Taunton, only the second international match in the history of the new format.
She was not required to bat as Australia won with seven wickets in hand.

Having failed to establish herself at international level in 2005, Blackwell started the 2005–06 WNCL season strongly, scoring 61 in the first match of the campaign, a seven-wicket win over Western Australia.
The next day she made 130, her maiden WNCL century,
Blackwell returned to Australia needing a strong end to the WNCL season to ensure selection for the 2005 World Cup in South Africa. In the four remaining round-robin matches, she made 96 runs in four innings, half of these coming in a five-wicket win over Queensland. New South Wales met Victoria in the finals. Blackwell was not required to bat in a seven-wicket win in the first match before making 13 and 24 as the reigning champions were dismissed for 71 and 109, losing the last two matches by five wickets and 50 runs respectively. Blackwell ended the season with 214 runs at 26.75 and this was enough to secure retention in the national team despite her poor results during the Indian tour. The Australians hosted New Zealand for three Rose Bowl ODIs in the western coastal city of Perth before the teams crossed the Indian Ocean to reach South Africa. Blackwell was not productive in the trans-Tasman matches. She made six and took 1/8 in the first match, and was then run out for 27 in the next game. She was omitted for third match.
In the first match of the World Cup, Blackwell was persevered with by the selectors; she did not bat as England made 7/169 before rain ended the match. This was followed by an encounter with New Zealand. Blackwell scored 53 in Australia's 7/174, helping to set up a 32-run win. In the third match against the West Indies, she was run out for a duck in a 79-run win, and was dropped for the 97-run win over the hosts. The group stages ended with two easy victories. Blackwell took 1/8 from two overs, her last international wicket, as Australia dismissed Sri Lanka for 57. Since then she has bowled only 47 balls in senior matches. She was not required to bat as Australia reached their target with eight wickets in hand. The match against Ireland was similar as Australia achieved the target of 67 with all wickets intact. The final pool match against India was abandoned without a ball being bowled due to inclement weather, and Australia met England in the semi-finals. Blackwell scored 10 not out, helping to complete the closing stages of a five-wicket win. In the final against India, she came in towards the end of the innings and made four not out as Australia amassed 4/215. Australia bowled India out for 117 to win by 98 runs. Blackwell ended the tournament with 67 runs at 33.50.
In the northern hemisphere summer of 2005, Australia toured England. They started with a stopover in Ireland, and only the second of the three ODIs went ahead; the other two matches were washed out by persistent rain. Blackwell made four not out as Australia made 3/295 and took a 240-run win.
Australia played two Tests in England. In the First Test at County Ground in Hove, Sussex, Blackwell batted at No. 5 and played alongside identical twin sister Kate, who was making her Test debut. She struggled in both innings, making five and nine and scoring at a strike rate of 20 or less in both innings. After taking an 82-run lead, Australia set the hosts a target of 306. Blackwell took two catches, her first at Test level, removing Claire Taylor and Jenny Gunn as the hosts ended on 7/172 to salvage a draw. In the Second Test at New Road, Worcester, Blackwell made 20 and 14 as Australia ceded a 158-run first innings lead and eventually lost by six wickets after Blackwell's fall in the second innings left them at 5/46, still 112 runs in arrears. She ended the series with 48 runs at 12.00.
Blackwell had mediocre results in the five ODIs, scoring 5, 27, 17 not out, 21 not out and 14 as Australia won 3–2. She ended the series with 84 runs at 28.00. Blackwell then played in Australia's inaugural Twenty20 international at the County Ground, Taunton, only the second international match in the history of the new format. She was not required to bat as Australia won with seven wickets in hand.
Having failed to establish herself at international level in 2005, Blackwell started the 2005–06 WNCL season strongly, scoring 61 in the first match of the campaign, a seven-wicket win over Western Australia. The next day she made 130, her maiden WNCL century, 
Alex Blackwell