No, you absolutely don't hope she gets help for her "anxiety", you're simply trying to imply she's weird because she's cleaner then you.
I wish people just stopped giving others psychiatric diagnosis just because they have different hygiene standards.
Anxiety and OCD are serious disorders which cause a lot of mental distress - it has nothing to do with simply having a shower every day before bed.
I would never ever go to bed without a shower and washing my hair after day in London and using public transport. I also believe private parts, armpits, feet and face need proper wash every evening anyway so it's just quicker to jump into shower. I also like my bedsheets clean and smelling nice as we don't change them as frequently as underwear or clothes. But that's me.
There is a spectrum of "normal" when it comes to personal hygiene. As long as people are not dirty and smelly when around others. People fall differently on the spectrum based on habits they grew up with, culture, personal preferences.
I do not really mind about other people's routines, like I said unless they smell etc. it's the matter of preferences but I do think when people live together as a couple, having completely different standards can cause problems.
Your hygiene standards are not right or wrong, they're just incompatible and it's up to you if you can both accept it or not.
If I was in someone's house I would definitely adjust to them if they had higher standard then me tho. Especially if they had clean sheets. Maybe he wasn't very nice about it and that's the real issue.