In 1853 she traveled with her mother, Ludovika, and her younger sister Elisabeth to the resort of Bad Ischl, Upper Austria with the hopes that she would become the bride of their cousin Franz Josef, then the emperor of Austria.
He decided that he preferred Elisabeth instead.
Helene was unusually pious, and would have fit into the  Habsburg court well.
 She had one quality, though, that would not have been accepted: she was habitually unpunctual, and often missed trains and appointments.

After the failed engagement, she became depressed and Ludovika became concerned that Helene would take the veil and join a convent.
 Helene had almost come to terms with remaining single.
 At 22 years old she was considered to be an "old maid," but her mother arranged for her to meet the wealthy Maximilian Anton Lamoral, Hereditary Prince of Thurn and Taxis.
 Duke Max in Bavaria, Helene's father, invited the Thurn and Taxis family to Possenhofen for a hunting party, at which Prince Maximilian was introduced to Helene.

While the prince was vacationing at Possenhofen, he brought his marriage plans to his parents, who immediately agreed.
 The only difficulty involved was that although the Thurn and Taxis family were counted among the richest in the land, they were not considered social equals for a princess of royal blood and a member of the House of Wittelsbach.
 Because of this, King Maximilian II of Bavaria did not at first agree to a marriage between the two, but through Elisabeth's influence on the king, the marriage took place nevertheless.
  The wedding ceremony was held on 24 August 1858 at Possenhofen.
 To mark the occasion, the in-laws gave the bride a necklace worth 160,000 Gulden.
 In spite of the earlier objections to the match, Helene is considered to have had the only happy marriage among the five Wittelsbach sisters.
 
Her daughter Louisa was born in 1859, followed by a second daughter, Elisabeth, in 1860.
 Shortly after the birth of her second child she traveled to Corfu to visit her sister Elisabeth, who was very ill.
 She returned by way of Vienna, where she reported to Franz Josef on the poor state of his wife.

She gave birth to the much-desired son in 1862, named Maximilian Maria, and in 1867 had another son named Albert.

Even though the couple had a happy marriage, it was overshadowed by the severe illness of her husband Maximilian, who had chronic kidney disease.
 Neither a course of treatment in Karlsbad nor the best doctors could save him.
 He died in 1867 at only 35 years of age.
In 1853 she traveled with her mother, Ludovika, and her younger sister Elisabeth to the resort of Bad Ischl, Upper Austria with the hopes that she would become the bride of their cousin Franz Josef, then the emperor of Austria. He decided that he preferred Elisabeth instead. Helene was unusually pious, and would have fit into the  Habsburg court well.  She had one quality, though, that would not have been accepted: she was habitually unpunctual, and often missed trains and appointments. 
After the failed engagement, she became depressed and Ludovika became concerned that Helene would take the veil and join a convent.  Helene had almost come to terms with remaining single.  At 22 years old she was considered to be an "old maid," but her mother arranged for her to meet the wealthy Maximilian Anton Lamoral, Hereditary Prince of Thurn and Taxis.  Duke Max in Bavaria, Helene's father, invited the Thurn and Taxis family to Possenhofen for a hunting party, at which Prince Maximilian was introduced to Helene.
While the prince was vacationing at Possenhofen, he brought his marriage plans to his parents, who immediately agreed.  The only difficulty involved was that although the Thurn and Taxis family were counted among the richest in the land, they were not considered social equals for a princess of royal blood and a member of the House of Wittelsbach.  Because of this, King Maximilian II of Bavaria did not at first agree to a marriage between the two, but through Elisabeth's influence on the king, the marriage took place nevertheless.   The wedding ceremony was held on 24 August 1858 at Possenhofen.  To mark the occasion, the in-laws gave the bride a necklace worth 160,000 Gulden.  In spite of the earlier objections to the match, Helene is considered to have had the only happy marriage among the five Wittelsbach sisters.  
Her daughter Louisa was born in 1859, followed by a second daughter, Elisabeth, in 1860.  Shortly after the birth of her second child she traveled to Corfu to visit her sister Elisabeth, who was very ill.  She returned by way of Vienna, where she reported to Franz Josef on the poor state of his wife.
She gave birth to the much-desired son in 1862, named Maximilian Maria, and in 1867 had another son named Albert.
Even though the couple had a happy marriage, it was overshadowed by the severe illness of her husband Maximilian, who had chronic kidney disease.  Neither a course of treatment in Karlsbad nor the best doctors could save him.  He died in 1867 at only 35 years of age.
Duchess Helene in Bavaria