Is it normal for teen girls to walk around naked ?

My daughter is now 15 and she tends to walk around the house naked or in just her panties.
He likes to see her shaved bald twat and pink wet clit with cum dripping out of her cunt and see her pink perky nipples and sexy ass cheeks , ass crack , booty hole.
She eats at the table stark naked.
I think she is looking for cock & nuts to suck and fuck.
She does know what the male cock and nuts look like first hand skin on skin in person and I'm not talking just illustrations in books in health class in school.
She has given males blow jobs and hand jobs.
She has seen her brother's cock in the shower and when she saw him jerking off , she volunteered her services and she said " allow me to get you off " and she jumped in the shower with him and she stroked his cock while she licked his nuts and he popped a nut in her mouth.
I dont know if they fucked.
He did finger her bald twat and her booty until she came and peed and pooped on his fingers.
He did suck on her tits and eat her cunt until it was bone dry and deep rimmed her booty hole squeaky clean.
Brothers and sisters experiment with each other all the time and play house and doctor.
Depending on their age , adolescents and pre teens tell each other if you show me your PP , I will show you mine.
Teenagers tell each other , if you show me your cock and nuts , I will show you my cunt and clit and tits and bare ass.