Heck, maybe she's enthusiastic for your interest, and just wants to show it in a way that's maybe not comfortable to you. Or, she hates it and is trying to embarrass you in front of people. Or something else. It's obviously an issue some way or other, and you're going to be best off working it out together, trying to figure out what's up with her, getting her to understand where your head's at. No accusations, no recriminations, make it about understanding and comfort. And be willing to give a little. If she really thinks you have too much and resents it, you may have a decision to make, or at least a sales pitch. Been there enough to know what I'm talking about, unfortunately not there now.