Hopefully this won't ever come to pass but, if it does...
Iona would probably be the one to go to about any physical damage as she'd be the best person to figure out the ins and outs of what she's made of and how her body works.
It would probably require help from either Ampla or Iris if it involves the soul/spirit within and tying those repairs to it so they stick to her form.
If she falls over in the Plump Prism, I'm sure theres some duct tape I can tape anything back together with.