Am I being too hard on her ?

My younger sister is 11 whenever she comes over I make her clean up behind herself and I try to teach her things that my mother didn’t teach me like washing clothes how to do my hair etc. I also try to teach her about basic hygiene she just started her period and I don’t want her getting made fun of at school but she just never wants to do anything I understand that she’s only 11 I just don’t want her to get older and not know anything like I did i had to teach myself certain things she sometimes gets mad at me when I get her to clean her mess or when I tell her she needs to go shower but I only do it because I want her to learn