I'm glad your child is calling you, see, it shows the children love and respect you 
You can give the information to the GAL also they can request the school and other court records, I'm sure there will be some hearing after the GAL has a chance to investigate. In the mean time you will be contacting the facilitators office and possibly an attorney through NWJP, to handle the contempt and other issues, possibly modification of the custody and visitation. While your children are visiting you, be sure to make doctor appontments for them, so you have a doctor established for them in your area.
You can give the information to the GAL also they can request the school and other court records, I'm sure there will be some hearing after the GAL has a chance to investigate. In the mean time you will be contacting the facilitators office and possibly an attorney through NWJP, to handle the contempt and other issues, possibly modification of the custody and visitation. While your children are visiting you, be sure to make doctor appontments for them, so you have a doctor established for them in your area.