It’s likely a lie. It might not have much to do with you. She may have her own personal reasons for not wanting to be with you. It might be some reason having to do with you, though. You could ask her if she has an issue with you. But I’d tread lightly with that confrontation because it will probably become an argument.

If I were your friend and had lied rather than being direct, I’d be put off if my friend started questioning me about my lie, and would have to lie more to cover it up or just start avoiding that friend. If I was interrogated on the lie, it would probably turn into a fight and then good bye friend.