Sounds like your friend is happy being a jw. It takes something very personally important to start those nagging doubts. Right now, she doesn't seem to want to think about it all. She is making the choice to hold tight to her comfort zone.
A least, she took the time to talk with you. It is always hard to lose friends, but you know that you tried to be honest with her. The witnesses are in for a bumpy ride, I think. You never know what touches and stirs another person's heart and mind.