The cat is ready to go...
I'm not one hundred percent sure that I got the measurements right. Measuring a cat's shoulder blades is tricky. Same as distance from head to floor. It's kind of subjective.
I'm ready to be told that we need a bigger carrier. Some websites say the distance between the top of the animal's head and the top of the carrier needs to be 10 centimeters, but I'm hoping for some French flexibility here. I think she'll be happy and cosy in the this one. And cats don't jump up or down like dogs do. I think.
By the way, yes, even our cat has a passport. She was born in Spain, and needed a passport when she moved here with her previous owner. Given her ability to adapt to new cultures and languages, I'm sure she'll integrate well into American life.