My vote: Claustropheobea’s power is a variant of spatial warping. She can make enclosed spaces larger then they really are (like a TARDIS), or smaller than they really are (like a reverse TARDIS). She can apply this affect to any enclosed space, such as buildings, rooms, fanny packs, barrels, trucks, glove compartments, dresser drawers, etc.
Openings in an “enclosed space” (such as doors, windows, hatches, etc.) do not prevent her power from working but might reduce its effectiveness. Also, relative proportions are really wonky when crossing the threshold from normal space into space she’s affecting. It messes with the mass of objects as well.
She can use her ability to counteract her own claustrophobia (by making rooms bigger) or to afflict other people with claustrophobia (by making the walls close in on them). She can also use it to carry around lots of equipment (by expanding the space inside of a backpack or satchel or pocket or even her sleeves). She can store criminals or allies inside of a sack. She can use it to reach anything in a room by shrinking the room until everything is only a few feet away, or prevent other people from reaching things in a room by expanding it until everything is very far away. She can use it to comfortably fit through tight spaces or hide inside of a grocery bag.
If her storyline takes a turn for the darker and edgier, she can fit hundreds of bullets into a single magazine or crush people to death in shrinking rooms.
In highschool, I had a friend who said he had taught himself to drive entirely by the sound of the road, the feedback from the wheel, and the response of the brake and accelerator. At night, on back country roads, he would close his eyes and guide the car along the winding gravel at a bit below the speed limit. His head was motionless, his voice calm, his steering just a slight bit unsure. Never did we stray from the road.
It was uncanny and terrifying.
… Years later, I’m quite sure that I worked out the trick: he closed only his right eye. From my position in the passenger seat, with his head always pointing straight forward, it would be impossible to tell that his left eye was still open.
Take a look at that globe! That is some impressive continental drift!