Only your pet's registered Owner is able to use the Leash Ring to do things like force-tp her. If you have been temporarily or inadvertently removed, you can get your pet to set you as owner again.
If you are your pet's registered Owner, then there could be a sync issue.
Ask your pet to restart her HUD:
HUD Menu > HELP… > restart…
After restart, if necessary, ask her to set you as owner again.