Sounds like a lazy dog walker, i don't spose she'd make as much if she walked a sensible number at a time. It seems like a total recipe for disaster, i certainly wouldn't pay a dog walker for that service
While the number of dogs seems way too many to me I remember seeing photos/videos of someone on another forum who owned about 15 dogs taking them all out together in some fields and being amazed, but that was 1 pack which the owner knew very well and they did look in control.