Her death was a cause for much sorrow on the part of her parents. When Marie Antoinette's foster-brother, Joseph Weber,[3] attempted to console her with the fact that given Sophie's tender age Marie Antoinette must not have grown overly attached to her, the bereaved mother is supposed to have said, "Don't forget that she would have been my friend." This was a reference to her words after the birth of Sophie's older sister, Marie Thérèse, in 1778:[4]