The first thing I would do is try to remove the plug. To do so, soak her feet in warm water and epsom salt for 10-15 minuets. Than flip her over on her back with a towel over her head. In the soak the plug or scab should have loosened. You can now try to wiggle the plug and get it to release from her foot, and pull it out. Sometimes it come right out, but sometimes it is a slow process. Try to wiggle it and see how attached it is after 10 minuets, then pull a bit. Her should be little blood, so id you see blood as you are pulling, then put her back in the bath for another 10 minuets. If you are seeing progression with the plug loosening keep soaking her and the water will soften the plug. If there is no progression and the plug will no budge then wrap her foot in vetrycin and neosporin and we will decide the next corse of action form there. If plug does come out there will be a hole in the pad. Fill the hole with neosporin and vetrycin, cover with gause and wrap in vet wrap. Tell me how it goes, and try this before surgery. Good luck again, Avery