Obviously, someone who believes a boa constrictor is a python is the person you want to trust on veterinary advice.

Seems like Rue finally landed in an excellent home!

Just one word of advice...when traveling with the snake, even short distances to the vet or whatever, they should always be in a secure, closed container. A tub with a tightly fitted lid, a sturdy cardboard box with the flaps taped down, even a small ice chest if it's a short trip. Something insulated to prevent sharp changes in temperature as much as possible...and something well padded with newspapers or old towels that leaves just enough room for the snake to fit so it can't get jostled around. The snake itself should be in a securely tied bag (inside-out pillowcase can work fine) and then placed in the container and secured in a safe place in the car. (On the floor if it's a warm day, or seat-belted on a seat if the day is cold enough to need the heater running).

I've read too many horror stories about snakes (big snakes, little snakes, snakes of all sorts) getting lost in cars because their keepers carried them on a lap for a "short drive."