On her entrance into a convent, Louis Racine composed a verse about her: Louise Adélaïde and her sister Charlotte Aglaé were both placed in the Abbey of Chelles from a young age.

[4] Initially, young Louise Adélaïde was considered as a possible bride for her cousin, Louis-Auguste de Bourbon, Prince of Dombes.

In 1716, Louise Adélaïde wanted to marry the Chevalier de Saint-Maixent; he was one of the king's pages, who had saved her from an accident during a hunt at the cost of an injury which nearly proved fatal.

The duchess of Orléans was horrified at the suggestion of such a mesalliance and reportedly treated Louise Adélaïde so harshly on the subject that it caused her to "take the veil" and become a nun.

As a result of the scandalous life led by her elder sister, the Duchess of Berry, who was notoriously promiscuous and concealed several pregnancies, Louise Adélaïde decided to become a nun.

She was also the Abbess of Val-de-Grâce, a church built under the auspices of her maternal and paternal great-grandmother Anne of Austria, the wife of King Louis XIII.

Her elder sister, the Duchess of Berry, died on 21 July 1719 and was found to be pregnant again, just over three months after suffering a horrendous confinement during which she had been denied the Sacraments.

Louise Adélaïde also allowed the Sisters of the Abbey of Nevers to build a house in the town in order to help educate the local girls.