I can just inagine the conversation~! New stepdad and step brothers, being explained WHY she has to sleep in their room now:
Soooooooo… You uuuh… w-we’re not kidding when you said… your thing was bigger than my arm… soooo… uuuuh… Please explain why you uuuh… W-Wanted my shirt off? And why are mom and your dad making so much noise?… also… you know we aren’t going to bed right? Like not the same one? What do you mean “you don’t even get to sleep in the bed”
Before putting her to work for his/their, own pleasure