Do you think she is annoyed at me or am I overthinking?

Why would she be annoyed with you? just discuss it with her. It's kinda mean of you not to say anything back. I'm a girl, and well if my boyfriend (if i had one for example) i wouldn't be happy if he didn't hug me back. If he did that, i would think he didn't like me any more, or he was angry at me. She obviously likes you, just tell her how you feel. Hope i helped x