I guess if it can be proved she was going insane beforehand, then it's possible she was getting sucked into the cult by her new boyfriend. Many American women get sucked into that cult when they hook up with a seemingly "charming" Muzzie guy as well. Unfortunately many of those women don't live to tell others what kind of mistake that was after charmiing turns into beatings and locked up out of sight when they go to Muhammad land.
Every other version of this story (including such wonderful sources as Reuters and AP) is she ‘considered’ turning to Islam, not that she did.
I think there’s some embellishing going on.