I'm really glad that you took her in, and I agree with Logan, why don't you ask your Vet for an e-collar so that she can't reach her staple.
We had a rottweiler who had problems when she got spayed and was oozing white pus and I took very warm wet cloths with epsum salts on it and put them on her wounds. But before you do anything like that please check with your Vet. Good Luck and hugs from
Miss Daisy, Perry and their MoM