Beware of "cold reading" it's an effective technique so called 'psychics' can pull on you whereby they glean little pieces of information about you and take small guesses, you may not even realise that you're giving them ammunition. If you have to "give" anything to her, be very wary, don't give ANY info about yourself, if she's a psychic she won't need to ask you things. And if you really want to test her, wear a wedding ring (if you aren't married) and we'll see how accurate the reading is
(sorry, I'm uber sceptical)