Is it normal that my mom walks around the house naked?

If your both straight women then it's not that weird, just make comments like"ughh *look away in a joking dramatic manner* come on mom no one wants to see that" and maybe she'll get embarrassed and stop. If she asks if you hate her say no but you find seeing your own mom nude gross. You don't need to make it awkward to get the point across, plus you could always lock the bathroom door, they put locks there for a reason lol