She looks for the room

Marinette's only option was to find Adrien and hide in their room. He was already going to see her naked, so it wasn't a big deal for her.

She got up and ran down the hall, her tits bouncing up and down with every stride. Finally coming to the end, she realized she couldn't remember the room number. Adrien had texted her the number, but she had forgotten her phone in her purse downstairs.