I wouldn't be surprised if she's had tapeworms in the past, honestly. It must have driven Babs nuts to have met her during NML, when she basically had to spend a year not able to get this kid the medical care she needed. I've got this image that won't go away of amateur Clocktower dentistry with Babs going in and pulling out Cass' bad teeth with nothing but a pair of pliers and some direct sunlight.