I personally would either blue kote it or leave it alone and go on my vacation.
If indeed you did still have scaly leg mites... well your treatment should have worked but the scales won't change instantly... but Ivermectin is effective against them IF need be.
You bird has an immune system that should fight off any possible infection. If other birds aren't pecking at it and it doesn't seem like an easy place for pecking to me.. just let heal. Accidents happen, just like in children.
To me, *sometimes* a bandage can just hold an infection in, keep a wound moist instead of letting it scab over. It doesn't currently look infected. Maybe have your sitter give yogurt or some other form of probiotics to support the birds own immunity.
As you have discovered, sometimes bandaging might cause more of an issue than it resolves... like with circulation and such... better safe than sorry. Let the birds immune system work it out and heal... as it was created to do!
Great job, catching it and looking out for her! Hope she recovers quickly and that you are able to relax and have a good time on vacation with your family.