I hate to be the one to say it, but if she is weird-ed out by out and just cannot come around to it. Even if she does one day she isn't really going to be accepting it but is going to be "dealing" with it. And I'll put a strain on your relationship.
Some people are just this way, they can't understand or comprehend it so they try to ignore it and once the cat's out of the bag with something like this, it's hard to put it back in.
I'm sorry if it sounds harsh, but you either have the choice of telling her you'll stop and forget about it, or embrace it behind her back and don't tell her about it, or leave her. (This is my opinion and I suggest thinking things through before making any decisions)
I hope you're okay, if you ever want to just chat I'm always an open ear. Feel free to message me on KiK, skype, PM or whatever.
Much love,
Amber <3