The door to Donnie's room is slightly ajar, and Tae gets a muffled response when she knocks, distracted, but at least a response.

Whether or not she's prepared for the sight of the green-skinned teenager is another thing, but there he sits on the floor with the bed at his soft-shelled back, working at some sort of... Well, it's metal and obviously has some sort of technical content as he's working carefully on some wiring, his goggles pulled down over his eyes.