Coming from my own experiences on this one. Be honest with her about it. When you guys talk in skype or before. If she's cool it won't bother her and if she's not okay with it she's not somebody you want to be with. I don't remember who but the other day a resistor said it acts as an unintentional filter for people/friends. The more you try and hide it the more anxiety there will be surrounding it and the stutter will be more frequent it'll happen. I hope this helps! Best of luck! I doubt she will care if she wants to talk to you more and get to know you more.