J.M.
Talk to the teacher to try and help your daughter. She will have to work it out to some extent though on her own, but you and the teacher can help. Reading your post I was reminded on when I switch elementary schools. I was much older than your daughter but had simialr troubles, so much so that my mom checked in to moving me back to my old school. I had seemed outgoing at my old school but just because I knew everyone. I'm actually very shy and had trouble opening up at the new one, even though I knew a couple of girls there already from other activities. It took me nearly a year to adjust and be happy at my new school. It didn't help that my teacher was a very unhelpful person either because she didn't care or she didn't know what to do, I don't know which. She retired the next year so obviously it wasn't from lack of experience. Just try talking to the teacher and wait it out. If you're comfortable that she is not being mistreated by the adults in any way. If you're not comfortable with the situation, move her.