My cat's abscess returned?

About a week ago, I posted a question about my kitten's abscess and fever. As suggested by the YA community, I took her to the vet and they treated her. She was released in 2 days and I was instructed to give her 1/2 ml of Clavamox by mouth twice a day for 10 days and 0.05 ml of Buprinex into the oral cavity twice a day for the next 3 days. When I brought her home, one of her drainage holes was still leaking a little pus so I used some warm compresses and wiped it up. She's been home for two days and the hole is closed but now it seems that her abscess has returned. I still have enough Buprinex for 1 day and Clavamox for 8 days. Should I keep giving her the meds as instructed or should I call the vet about this? The vet fees are expensive so I'm hoping to avoid another visit.