My family seems kinda weirded out by me letting my friend live with me and stuff.

I think some of them think I'm a simp, or that she's taking advantage of me. I mentioned to my brother that I'm gonna be working in the office more so I can drive her to work, and he basically said it's weird if she didn't like, performatively tell me not to do that.

I don't feel like it's that weird. I think letting a friend crash on your couch when they're shit outta luck is pretty common. It's a big favor, sure, but idk, my parents gave me a LOT of help getting started in life and I think it's kinda super reasonable to want to use that privilege to uplift someone else. Besides, it's not like I don't get anything out of it. She cleans a lot, she has a most wonderful cat, and it's nice to have company.