If she were my hen I would not bandage it. I would trim the feathers around the area so it could dry. I would use something like cotton balls and wipe it with betadine twice a day I’d let it dry before covering it with the apron. As Wyorp Rick said she’ll be fine if she has no feathers. I too...
Photo would be nice so we can see what’s going on. You should do a complete examination of her top to bottom front to back all the way down to her skin go slowly take your time if you find wounds it’s best to trim a perimeter around it. Take photos of what you find. I don’t know if you’ll want...