As long as you don't know why she isn't talking to you it's all speculation. Talk to her! Maybe you are misinterpreting this because you expect a negative outcome.

The thing is that you don't have to be embarrassed of you fetish. It's not your fault you have it it's only your fault how much you let it roam and if you hurt or use anyone just to get satisfaction. This said: If she is by any means disgusted or feeling awkward it's her problem not yours. I am glad my ohantasies have been accepted by anyone I told so far. But honestly I never told anyone to which extend I really live my ohantasies.