It sounds from the article that she found a community in Islam and that he was aggressively pursuing her at a time when she wasn't in a good place mentally.
Vulnerable people in distress make bad decisions and that goes for all religions or none.
One thing about Islam is that widows are especially honored. I can imagine where in Western culture a woman with 2 partners that sadly passed away would be marked as a 'black widow', in some Asian and African cultures widows are shunned and blamed for their husband's death. I don't personally agree with this superstitious and dangerous view of widows, I think they are appalling, totally unfair accusations of a women, but my point here is that in Islam marrying a widow specially who has orphans, has high religious rewards in Islam so I could see his motivation in marrying and pursuing her from a religious point of view and she probably was treated by the Islamic community not as a 'freak' or 'cursed' woman but as a woman who is being greatly tested by Allah and who will bring blessings to whoever does charity to her or her children due to her being a widow.
So, I think that she was in a vulnerable place and was engulfed by the support of Islamic community which encouraged her remarrying, coupled with this younger man aggressively pushing for marriage it might have flattered her, she certainly would have felt pressured. Marriage and remarriage are strongly encouraged in Islam.