It depends on how paranoid you are. I have no problem with revealing the kind of generic things I might reveal to a stranger in a pub. Profession, area where I live, holidays, interests, married or single, kids, etc. However, if she started asking detailed questions, such as the road name or what company I work for, that would make me wary. The context is also important: if she is asking a lot of you, without giving similar info about herself, that would also make me wary.