Permission not granted

My roommate keeps asking me if she can do things after she has done them.

After sticking her size 8.5 foot in my size 7.5 pumps. "Is it okay if I put my foot in it?"

After coming in my room. "Is it okay if I come in?"

After grabbing my charger and plugging her phone in. "Is it okay if I use your charger?"

It's as if an unnecessary politeness circuit triggers in her brain after the fact. I can't complain though - her hair cream and flat iron live permanently in my room.