Can we? No.
Will we? Maybe…
Arguably, no one deserves to have bad things happen to them.
But that’s life for you. Robin - that is, the protagonist - needed a wake up call. Gwen too, but guess she got the short end of the stick this time.
From the way it’s painted tho, the injury isn’t meant to be healed. At least not any time soon.
But Arc is a bit of a softie sometimes, so it will probably happen. Specially if you take into account that we’re supposed to get her preggernet at some point.
And regarding the powers. It’s going to be a big part of the story for Gwen and Chloe in act 3.
Can we undo what we did to them? And if so, should we?
Whole argument of “Would you rather be free and miserable or enslaved but happy”.