My (25F) girlfriend refuses to listen to my (26M)arguments based on scientific evidence

Important content- She is Muslim and I am non-Muslim

So, we were having a conversation about personal hygiene and she was agitated after finding out that I dont wash my penis every time after peeing. I explained to her that I shower twice a day and always clear the last drops and keep the area clean. She insists that it isn’t hygienic at all. To refute this claim, I googled to look at what doctors have to say and they said that if you wash the region daily, you are at no risk and are hygienic. I shared a bunch of articles and statements by doctors.

Despite all that, she says it isn’t hygienic according to Islam and said she will never touch me there again unless I wash it every time I pee (which I think is batshit crazy and practically impossible )

How to convince someone who is very religious like that?