You need an attorney. Use the Avvo search tool and/or your county bar association to find one versed in probation hearings.

If you can document: 1. The other dog digging under your fence, and; 2. Impregnating your dog; you can sue your neighbor for all costs...

Leases are a landlord/tenant issue - moving accordingly. Your granddaughter needs to re-evaluate her living situation. It is not your issue.

Moving to landlord/tenant. Document the scope of the disruption and have an attorney review your material, to ascertain your options.

If you have messages sufficiently detailed to show a contract, you can sue to enforce it.

You have no written agreement and, likely, no proof who sired the pups. You could sue, but you have little evidence to support your case.

Retain counsel - and control your dogs.

Notify your homeowners insurance carrier immediately. If you are uninsured, retain counsel immediately.

If she is driving a car you gave her, you are liable for the consequences. Get the car and insurance in her name; not yours

You should notify the board of health and animal control officer in the town the breeder is in, as well as pursuing a refund.