Hi Ann,
Traveling and anxiety in pets is unfortunately very common and can also be very difficult to remedy. I would assume the gabapentin was obtained from your veterinarian. Some cats and dogs respond to medications differently so other supplements or medications may need to be tried. If I’m understanding correctly, you are rubbing olive oil and gabapentin on her legs. Gabapentin for cats anxiety while traveling is not an appropriate use for the medication and you should consult your veterinarian for proper doses and routes.
I hope this helps.
Dr. Ryan Llera