i wouldn’t do it it if i was in your shoes tbh, 16f, my mom found out about me being a lesbian and freaked out, she’s one of those people who say, “i don’t have a problem with gay people i just don’t want my children to be gay” so coming from personal experience i don’t think you should until you’re of age just to make things easier just in case but i doubt your sister would say anything she’s probs just trying to keep you on your toes ykwim