She might be just worried about you, like if u are too anxious about germs. While its good to have good hygiene, fear of germs and diseases can't be allowed to become detrimental to ur life. I had to remind myself with covid around that I was becoming too careful and needed to be more laidback :) lot of germs are good for immunity system!
But I hope both of u can talk about ur points more to each other and hear them out ^^