Normally you wouldn't wrap/bandage a wound. Leave it open to the air and just keep it cleaned and your ointment on.
It looks like you've done a good job wrapping it. If you feel you need to wrap/cover the wound for her daily outside visits, that should be o.k.
Sorry about your duck.
Some photos from a few different angles would be a good idea.
I would clean/flush the wound with saline, chlorhexidine or povidone iodine. Apply triple antibiotic ointment or the bacitracin to the wound.
No stitching. Care for the wound daily. If she gets it dirty...