Wow - that is a good question. From your story it sounds like she is looking for an excuse to break this relationship with you off. Are you a man? Have you two ever been romantically involved. Maybe she is seeing someone who is possessive and doesn't like her seeing you and so she was looking for an excuse to make you the bad guy so she doesn't have to admit to herself that she is dating a jerk.
If there is nothing romantic and you are just friends, maybe you really did say something that offended her and you just don't know it. If that is the case go to her and tell her honestly, I value your friendship and if I've said something to hurt or offend you I'm sorry. Be a good listener as there may be something going on in her life. You never know.





