I don't think a judge will make her move based on the facts above but you can file a motion to modify the child custody order, so you can spend more time with your children in a safer area. Please note that if you believe that the children may be subjected to some immediate irreparable harm, you can always file an order to show cause. If you think she neglects the children or places them in an unsafe conditions, contact DCPP.
This answer is for informational purposes only and should not be construed as legal advice.
You better hop[e the judge knows the areas and feels the same way you do.
My name is Stephen R. Cohen and have practiced since 1974. I practice in Los Angeles and Orange County, CA. These answers do not create an attorney client relationship. My answers may offend I believe in telling the truth, I use common sense as well as the law. Other state's laws may differ.. There are a lot of really good attorneys on this site, I will do limited appearances which are preparation of court documents it is , less expensive. However generally I believe an attorney is better than none.
In order to have your custody arrangements examined by a judge, you will have to prove a substantial change in circumstance. Her move could be considered that substantial change in circumstance in order to revise your parenting time but I do not think the circumstances rise to the level for a change in custody. On the other hand, if the children are not doing well in their new school or are in some other way substantially negatively impacted by the move, you may have a case.