Did you say to her you found it bothersome before defriending her? I think if you mentioned to her that you didn't like that sort of comments, and she kept doing it, then she was definitely rude! From what you posted she wrote, I don't see as hostile at all, but if there were other comments that were that would be weird.
Some people take things a bit too far and if they're not checked, with a quick 'hey, this bothers me', they'll keep doing it. Because they wouldn't know that it bothered you, and that's the sort of thing that we can see from this thread *wouldn't* bother many people.
I say things to some of my friends that I'd never say to those who're more sensitive about certain issues, but if one of the ones I do joke around with that way ever said 'please cut it out', I absolutely would.