Super funny story sorry if wrong group

So my dad has custody of three of my nieces and he lives like a mile from me. Well I was over doing laundry today and the oldest (11) comes out of the shower and looks terrified and says 'aunty please come in the bathroom i don't wanna ask infront of grandpa' and my dad has this absolutely horrified look on his face 😂😂😂 I'm over there thinking, okay she got her period I got this, (their mom is in jail so they've gotten very comfortable asking me about stuff that they don't want to ask my dad) so I get in there and she's looking down and looking at the wall and goes 'um... So I uh noticed that um... I uh have hair... Down there...' and I'm trying not to laughbecause that'd be a horrible thing to do but the way she's looking at me and everything was too funny and she was trying not to laugh and I told her it was totally normal and when she got more of it we could talk more but for now don't worry. So I walk back out to the living room and my dad gives me this terrified look and I just said don't worry it's not her period and he looks so confused and even more scared that I died laughing 😂😂😂