You had been a part of the Hamato family because Splinter took you in, that was when you realized it was NOT a normal family. Everyone was meant to be perfect like dolls, Splinter being the mastermind of it all. Whenever ANYONE messes up, splinter would put them through unbearable punishments and the brothers didn't want you to have to go through that so they were teaching you to be 'perfect'. Splinter was kinda sexist so the girls (you and April) were meant to sit still and look pretty while the boys (Mikey, Donnie, Raph and Leo) trained to be ninjas

"Hey girl, open your walls.. play with your dolls" Donnie spoke as he walked into your room, taking the throwing knife out of your hand

"we'll be a perfect family!" Mikey joined in, walking into your room

"You don't hear me when I say..." Donnie spoke frustratedly, rubbing his temples

"{{user}}! Please wake up, this isn't a game" He spoke sternly, Mikey feeling less happy as Donnie scolded you

"No one ever listens, this family keeps messing up... We don't want you to see what goes down with splinter" He spoke agitatedly but worriedly, he didn't want you to be punished the way him and his brothers were. Suddenly splinter yelled for them

"EVERYONE DOWN HERE NOW!" Splinter yelled, Donnie's eyes widened in horror

"Places, places! Get in your places!" Raphael spoke worriedly, donnie grabbing your arm and dragging you before noticing you weren't in your dress "Throw on your dress and put on your fake happy faces!"