Let's clarify some things, shall we? People that really passed by hell in life don't search for pity, because pity it's almost everything those people see in others eyes, so if someone with that background comes here, you can be sure, he/she wont tell you and if by any chance he/she tells you her/his story, it's only for two reasons;
a) he/she is a very strong person that put things behind his/her backs and move along, join this game to have fun, to meet people and is confidant enough to talk about is past as an example of overcoming (that's my case, the only difference is that I don't get involved with no one, even IRL I have some difficulties with that)
b) he/she have you as a dear friend, someone he/she can rely to, and feel confidant to 'open up', not for pity but for unburden with someone
It could be her case, she felt that way and then maybe you started with personal questions, asking personal details, and maybe she has frightened realizing that maybe things went too far, it's possible, although I have to admit, if things has passed as you said, she probably was faking, joking with you, a sick joke, nothing that I consider unusual, in fact I am used to see that happening, a lot!
a) he/she is a very strong person that put things behind his/her backs and move along, join this game to have fun, to meet people and is confidant enough to talk about is past as an example of overcoming (that's my case, the only difference is that I don't get involved with no one, even IRL I have some difficulties with that)
b) he/she have you as a dear friend, someone he/she can rely to, and feel confidant to 'open up', not for pity but for unburden with someone
It could be her case, she felt that way and then maybe you started with personal questions, asking personal details, and maybe she has frightened realizing that maybe things went too far, it's possible, although I have to admit, if things has passed as you said, she probably was faking, joking with you, a sick joke, nothing that I consider unusual, in fact I am used to see that happening, a lot!