We moved when ds was 2 as well. It was his first home and he was moving from being just the 3 of us and hardly any friends to moving home to family - a big social change.
It depends on how resilient your LO is to change. If she does well sleeping at others, she'll probably be okay.
Anyway, I am a weirdo and made a book. I put pictures of us, our home, and his toys. Then I put a picture of moving boxes and a moving van. Then, one of him and who would be watching him when we moved. Then photos of his new house - bedroom, kitchen, play area - and again, his toys. Also photos of us again at the end and the family he would see most often after the move.
We read it each day and he was so excited when the time came.
We packed his toys last. We really wanted the physical move to be as short lived as possible for him.
the important thing is he knows that you are all going as a family, will still be a family, and her things will be there too.
And set up her room and toys FIRST so she has some normalcy.
She'll do great!