This postive environment will be a huge long term help to your daughter.
Yes settling in takes time, but the long term benefits of nice friends from normal backgrounds where further education opportunities are expected to be taken up, will help her to aim higher.
Peer influence is huge on teens, good peer influence is priceless.
Explain to your daughter that the bigger picture is that this new area is better for you both long term and that is where you will remain.
Uncertainty will lead her to feel further unsettled.
Be firm and resolute that you are staying put and encourage her to invest in these new relationships.
You are NEVER moving back.
That friend of yours is absolutely not concerned by what is best for you and your child.
Remember that.
Also, there is nothing wrong on being well aware of a persons bad points and quick to spot them.
Ignoring them and thinking that makes you a positive person is deluded.
All it does is make you vulnerable to twats.
Start learning to listen to your gut.