'Sending' energy is the real problem; that's not really how thanergy works. It's more of a punch than a touch. She feels a burning ache in her own arm as she nearly rots a hole in her radius, but suddenly--yes--the skeletal arm is moving. She can't see it but she's sure it is.

No fine control; she waves her arm and imagines it flopping around in her room, spilling off the desk.

"Good," she says. "Close it?"