There is no respectful way to ask if someone molested someone else. The question in and of itself is disrespectful, regardless of how it was asked.
It's also extremely uncouth to message his sister/brother regardless of reason. His siblings are victims of HIM. Boogie has claimed his sister molested him and then later retracted the claim on the Killstream BY BLAMING HIS OWN BROTHER FOR WHY HE MADE THE CLAIM IN THE FIRST PLACE. He has said on video his sister is mentally unstable and struggled with addiction, and claimed his brother "fucked up his kids" nothing he says should be taken seriously, Boogie is a liar, and what he said about his siblings isn't an exception. Boogie WAS NOT molested by his sister just like he wasn't molested by his parents.
No, she didn't. She just doesn't want retards from Kiwifarms messaging her about a guy she probably wants nothing to do with.
Leave his family alone.