The reality is, maybe she wasn't a fan of your stutter. That unfortunately happens. But that should say something about the way she is. Y'all seemed to click but once she heard your stutter, she didn't like it and decided to not be interested. I think that says a lot about her personality. People like that exist. But guess what? Understandable people exist too! There are people that understand that we can't control our stutters and they don't think that's a bad thing! I hope you find an understanding person who understands you <3