I am moving from Colorado to Washington State and I have a female cat who hates to ride in a car and just hates being in her carrier. she makes it very apparent that she hates the carrier and she has done this since she was a kitten. this is going to be a 17 hr drive and I don't want to make her sick or loose her voice. she gets very stressed and I am wondering how o keep her calm with out having to give her a shot to sleep or something. It brakes my heart to see her so stressed.