She is so young, she won't even realize what is going on, make it fun, buy her some new toys for the plane, talk about ti all in an upbeat voice.
my son was 4 when we moved here from the uk, so he was a little more cognizant of what was going on, but still, he didn't really realize the full extent of it.
he did request a few toys that he wanted to keep, as we had to get rid of a lot of stuff, we gave a lot to charity, and we explained it to him, and he liked the idea of other children playing with his toys (except his thomas's lol, which we had to bring)