ummmm 9ish hours?? UGHHH LOL.
If we leave at 9am - she will be good until 11 - 11:30. i do that sorta distance with her often so will be ok, as long as we dont' get hung up at the border. We should - at that point - feed her lunch anyway, so we will stop. then when we get back in truck, she will likely nap for an hour possibly 1.5 hours... but after that its gonna be SKETCHY!