Grandmother's tribute to Tyler and Jordan Green who died in Derbyshire house fire Fire victims: Josie Leighton, 32, (left) and her friend Claire James, 27, (right) who died in the blaze Killed in the fire: Josie Leighton's two sons Jordan, 12, (left) and Tyler, nine (right) who also died in the house fire in North Wingfield, Derbyshire A friend said that both women, who were single mothers, had known each other for a number of years and shared childcare. Post-mortem examinations are being carried out on the four fire victims today to establish the cause of death. Outside the house, Ian and Emma Smith said their immediate thoughts were with Tia who escaped the blaze. The girl was treated for minor smoke inhalation yesterday before being released from hospital. Speaking through tears, Mrs Smith said: 'I just hope that little girl is all right - she's lost her mother just before Christmas. 'We're trying to run around collecting clothes, toys and whatever we can to donate to her family so she's got something. We'd do anything to help that child. She will have everything she wants, even if my kids have to go without their Christmas presents. She said a collection campaign had also started on social media for the bereaved youngster. Mrs Smith added: 'I have eight kids myself, and just to go and see that house after what has happened it is just the most awful, terrible thing imaginable. I cannot understand the pain their families must be in. Bouquets: A row of flowers is lined up next to a wall out the front of the mid-terrace property in North Wingfield Tribute: A note left on a bouquet of flowers at the scene of the blaze in North Wingfield, Derbyshire Respects: A series of mourners have visited the property today to pay their respects to the two mothers and two boys who died in the fire The fire brigade were on the scene within eight minutes of a neighbour raising the alarm at 4.58am yesterday. Firefighters arrived to find the young girl in the back garden and got her to safety, then battled 'arduous conditions' inside in a bid to rescue the other occupants. Ms James and Ms Leighton were pronounced dead at the scene while young Tyler and his brother Jordan were pronounced dead later at Chesterfield and District Royal Hospital. The house's exterior bears few signs of the deadly blaze, with a pair of child's shoes discarded in the front porch and broken glass littering the garden. Remains: Shoes can be seen inside the front door of the damaged property where four people died Fire safety officers have been carrying out community checks in the area today, while specialist police family liaison officers are continuing to support bereaved loved ones. Speaking at the scene yesterday chief inspector Rick Gooch, of Derbyshire Police, said: 'It is a tragic event. The impact on the community is obviously recognised and together we are working through that with the family. The blaze is the fourth in Derbyshire in just three and a half years in which children have died. In April 2010, five-year-old Niamh Adams and her brother Cayden, two, were killed in a fire at their home in Buxton. Their mother, Fiona Adams, was charged with their murders but later cleared. Tommy Henson, nine, Alisha Henson-Nulty, six, Rocco Henson-Nulty, four, and Appolonia Henson, two, died after a stray spark from a log fire started an inferno in their home in Hulland Ward in January 2011. And in May last year Jade Philpott, ten, and her brothers Duwayne, 13, John, nine, Jack, eight, Jesse, six, and Jayden, five, were killed when their parents Mick and Mairead started a blaze at their home in Derby along with family friend Paul Mosley. Scene: The terraced property in North Wingfield, near Chesterfield, where the fire broke out