I can't understand it, why does it bother her so much? If she doesn't like them that's fine, she doesn't have to use them! What you do with your own body is your business.
I'm very strong minded so I have a strong opinion on this but it's your call - and there's some great advice above. If I got with a man or woman and they didn't like something I was into, I wouldn't let it get to me. If they wanted to end it because of that thing then I'd quite clearly tell them to jog on! Love is accepting someone whatever their likes or dislikes. I couldn't be with someone who wasn't like that.
Anyway I'll stop ranting now, sorry if that wasn't very helpful! I hope you get the result you want ☺️
And welcome to the forums!