That sounds difficult. One of my bonded pairs, Morgana and Avalon, recently had a medical episode. Morgana had Flystrike, and had 2 open wounds the size of my thumbnail. Avalon was licking her wounds. I separated them for 36 hours, (including a visit to the vet) and I was afraid of them unbonding if I left them separated long enough for her wounds to heal, and the fur to grow over. I decided to let her out with him. My first bonded pair could withstand a week of separation, But I didn’t think Avalon would be able to make it. So put them together. He continued to lick her wounds, and even when they closed, he licked the bare skin. It did get somewhat raw. But her fur grew back quickly enough, that I didn’t need to do anything about it. Your case might be different. I would definitely have her checked out at a vet. Some shelters have their bunnies examined before adopting them out. When I adopted Lancelot, he had an indepth set of medical records from the Humane Society. Not all shelters manage that. Is Lulu licking the scabs or actually chewing the fur? Could you post pics of the scabs? I think many vets would put health and recovery above bonding, and would recommend to keep them separate. I would make that a personal choice depending on each bunny, and the nature of the health problem.