Thanks for all the ideas. I'm going to look into the alternative collar and shirt (although I did try a t-shirt on her at first and she got it off somehow even with her big collar on while we were gone).

Adele saw the vet again today and they took out the staples because they weren't doing much...now the wound is open, but they said it should still heal as long as it stays clean (she will obviously have a huge scar though). She's on a very strong antibiotic and with me cleaning it a few times a day hopefully it will eventually get better (plus she'll be going to the vet every 5 days or so to get it rechecked). The vet thought it would take another few weeks to heal. I wish I could just tell her to hold still and leave it alone!