You could always try steri strips. Get them in between feathers on bare skin. I go back and forth on clipping feathers verses plucking. Plucking makes it easier to see but they grow back pretty quick. I wonder if growing feathers takes away from healing? Clipping them, they can be in the way but her body thinks they are still there.

Steri strips might be easier on you then having to try stitching her up.
A drain or wick to help healing from inside out could be helpful. I've never delt with either of those but I know they are used.
You may want an ace bandage or rolled gauze too. Help hold everything up. If she's eating like normal her crop filling could push at the wound from the inside. When chickens have crop problems people use a crop bra to hold it up. That could be helpful here too.
Keep us posted.