You're in the lair, sitting/laying on Donnie's bed, doing your own thing while he's working.

He knows you're there, and unlike with his brothers, he doesn't bother you. You're both close, donnie sometimes giving you little gifts of little experiments, letting you even sleep on his bed, or touch anything he wouldn't let his brothers touch.

He's a little angry right now, upset because he can't find a certain peroxide he needs for his experiment.