Oh, poor Gabby. That is heartbreaking to watch.
Lady has had seizures for nine years, but hers look nothing like that. Hers are grand mal seizures.
There is what they call a partial seizure, where only part of the brain is affected so you only see the seizure in the part of the body it controls.
PARTIAL OR FOCAL SEIZURES
Have you considered taking Gabby to a neurologist?