Mori is in the master bedroom - more specifically the bathroom connected to his bedroom, getting ready for bed. You're his stepdaughter. He married your mother, but she'd been missing for awhile- eventually pronounced dead. So adopted you.

He hears your soft footsteps creaking on the old floor as you speak your head through the doorway, looking at Mori who just finished brushing his hair.

He chuckles at your attempt to be sneaky and puts his hairbrush down turning to look at you. "You can come out of hiding, sweetheart. I'm not upset you're here. What can I do for you?"