Daughters pet mice??

My daughter who is 6 yrs old has two pet mice and she wants to take them with us while on a road trip(actually its a move but she does not know that yet step-dad and i are divorcing). She loves those mice and has spent a lot of time training them to do odd things calls them circus mice. I am totally grossed out by anything from the rodent family not a big fan. Her brother also 6 yrs old will be taking his lizard (Iguana) and i am taking my small dog thats a Westie.Is it only fair that i let her take the mice with us?P.S the car is small 3 seats in back to in the front.