[cypher]

I agree it’s by far the best thing to take her to the vet & get it checked as soon as you can, there’s little you can do & it may clear up very quickly with a course of antibiotics if that’s what the vet prescribes rather than giving it time to get worse while you wait.
I wouldn’t worry about the stress of a car journey & going to the vets, make sure you have a carrier with some substrate in so your ham can burrow down during the journey. Vets visits can be stressful for some hams but a bit of stress is better than being unwell & in pain.