Keeping rats from picking at injuries?

I've got a gorgeous siamese girl currently separated into her own cage. Her cage-mates had been bullying her, so she's got two injuries near her neck. They shouldn't have been much issue: I keep them clean, put neosporin on them, and keep her cage very clean. But she keeps picking at the scabs, and now one of the injuries has grown big enough that she can chew at it when she's grooming.

Because she keeps removing the scabs, these are open injuries, so I can't exactly put something foul-tasting on them, and I'm afraid rats are too clever/dexterous for a tiny cone of shame to be effective. Has anyone else had this problem, or know what to do?

Picking at the scabs isn't a big deal, but the neosporin might be making her pick at it more. You can probably just leave it without the cream, and just clean them (if they even need it) with saline or iodine solution.

Should be fine.

I usually let them deal with their wounds themselves unless it's really bad, we're talking chunks missing or something along those lines.