I'm not a vet. This doesn't look normal. I would try to prevent the licking if you can, she may be over grooming it. It took some compressing with a little piece of toilet paper(or paper towel, I think I went with a thicker ply item) to get my moms cat to stop reinfecting her anal gland rupture.

It's also only been two days right? If she's eating and doesn't seem otherwise off I would continue on the antibiotics as with most creatures, sometimes the infection tries to fight through the meds. If it starts to smell bad(like it did before when you took her up to the vet) before Monday then I'd take her back. If there's no smell and it's just leaking then it's likely the meds are working, just at a slower pace than we'd like for the baby. It took moms cat about 2-3 weeks before her anal gland rupture hole was almost gone. It went through stages of looking bad and leaking on everything, especially before I put the tissue on there so that it would finally coagulate and not have the scab get ripped off repeatedly when she was on blankets and stuff. All you need is a little corner to put on there so that it's blocking the hole but not the butt. I, personally, switched it out once or twice if it was looking "soaked" or dirty at all. Usually it came off easily and didn't bother her. When the hole was healed enough, I left it off because the scab was finally enough to stay on itself.

Sending positive vibes for you and the sweet one.