:hugs:
I am so sorry. 13.5 years is a great long life regardless what happens ( I truly feel this way about Rocky - as HARD as I know loosing him will be, big picture I feel blessed he has given me so many wonderful years).
Concentrate on keeping her calm and happy. I get wanting to know but if the car trip will be stressful and there is no treatment difference...i'd not make her do the drive. If the car trip is a fun thing she would enjoy that's another story.