To the OP, I would tell her I do not discuss religion and if she brings it up to you again just ignore her. Try to understand that just by "being" Christians no matter what variety (Catholic or Protestant) we are all called by Christ to be witnesses to our Faith. Some people are more enthusiastic than others, especially one's newly introduced into the Faith.
Being Catholic myself I do not force my Faith on anyone if it comes up in discussion (It has in several occasions because of teaching Ju-Jitsu) I try to explain to the best of my ability why I believe what I believe (As taught by the Magisterium and the Catechism) and try to dispell the ignorance and misunderstanding about Catholicism and Christianity in general. I will not argue or fight with them, I will just present it the best way I can with love and understanding. If they attack me or get argumenative I thank them for their time and input and end it. Jesus never beat anyone over the head (OK, except for that time in the Temple. LOL) or tried to ram it down people's throats. He just spoke the truth, if people listened they listened if not...not.
Michael
No, I don't understand that, it's nothing to do with me what your (or anyone elses) religion is and I'd really prefer it to stay that way so I don't want people "witnessing" at me in the least! quite honestly? I find it offensive to be approached by such people and they will be told that.