Try a short leash on a harness. Keep it vertical so it's difficult for her to reach. While holding it vertically try to attract her attention, & get her moving forward with a treat or squeaky toy.
Could put bitter apple on the part of the leash she can reach. Could also take her to the PetSmart or Petco & see if there's a leash, e.g., small metal chain link, she doesn't have a chewing interest.
Patience. |