Edie goes a little green, but says, "I will."

The angel wants Xavier face down on a table. She has Cam anesthetize him from the wound down, which Cam does. Skin parts under her scrutiny; she investigates the spinal damage. She connects things up. The skin knits bloodlessly together again. "Do you also wish your leg muscles restored to active condition?" she inquires of the patient.

"...Yes."

So she does that. She doesn't have to open anything up and look at it for that. When she's done, the feeling in the professor's legs abruptly comes back.