Get Daisy to the vet if she’s eating non-stop. Reestablish a routine for EVERYONE in the house. This may include feeding all the dogs in their crates for now.
I would also encourage getting a behaviorist in the home, to see exactly what’s going on. There may be an underlying behavioral issue that you aren’t seeing.
Is Jessy a herding breed? How long have you had her in the home? What sort of training have you done with her thus far?
Could these be nipples?