I think you should assess if your daughter has a bubbly personality, or if she is quiet.
If she is bubbly, moving to Cali will be no problem, as she will make new friends almost immediately.
If she is quiet, moving may be more difficult for her.
However, if she is going from 5th to 6th grade, she may be changing schools
anyway (in my part of the US, K-5th = elementary, 6th-8th is Middle School)
Either way, im sure you daughter would end up adapting.