As for her reason to not date this Karim, obviously, since most Muslims don’t behead people or beat their wives, not wanting to associate with people like that is a bad reason to not want to date a Muslim.
Judging by a number of testimonies, the site has proved valuable to many women benefiting from advice and the sharing of information; for a couple of examples see the postings by Sally, Nourshehane, Jeweler46, and Cindy (starting here, continuing here, and ending here).
In short, mid-life crises come early and hit harder for non-practicing Muslim men.
I have seen this play out so many times in my own family and community that it no longer surprises me.
We have such a great relationship where we don’t even need to talk to enjoy each others company, but I recall her being abnormally silent that day.
While normally she’s commenting on characters from a show or chatting during commercials, she seemed preoccupied.