The peroxide will help boil them out a bit. The Vet is a very good idea but if it ends up not being an option you can thoroughly clean the wound several times a day making sure to boil it out with peroxide then applying topical antibiotic ointment on the wound then a clean dressing. A good broad spectrum antibiotic might not hurt either. I commonly use Baytril and just give a small shot in the breast. Depending on how nice your vet is you might be able to go and get 2 shots of baytril for under 5 dollars without having to bring her in, it might be worth a shot.