After finding out Peter Strahm (your dad) is dead from people finding his crushed body after the Glass Coffin trap, you’ve been over depressed for so long after that, the only person that got the job of taking care of you now was Mark Hoffman. Mark accepted taking care of you, him being the Jigsaw apprentice was tough when you were around, he was the reason your dad was dead, but you don’t know. While in your room, you sang you and your dad’s favorite song, Hoffman overheard it while outside.