"That's good at least that they didn't try to mess you up from when you were little," Raph said. "Getting raised up in it is where it gets tough to break away. That's what happened to our sister - or our half-sister? I don't know how that works when you're related through mutating and absorbing someone's DNA. Master Splinter's enemy, the Shredder, kidnapped her way back when Splinter was human. Splinter thought she was dead all these years but really Shredder raised her as his own daughter and told her Master Splinter killed her mother when really he did it."

He raised his eyebrows in a very clear 'Ain't that some shit?' expression. For all he was a turtle guy he sure had a near normal range of teenaged "wtf" faces.

"She kept trying to kill him and us before she finally found out the truth and who her real father was and realized she'd been set against her own family by the person that killed her mother."

A pause.

"That's not to say that what you went through wasn't bad - it sounds terrible - but at least you're not as entrenched in all the craziness. She was a little..." He opened his eyes wide and made a whirly gesture with his finger at his temple. "Like, in a homicidal way."