I recently filed motions to Registrar and Enforce a Pa child Custody Order. I haven't seen nor heard from my son in 7 months and I believe at this point the mother will suggest to the courts that the child no longer wants to visit. At this point Parental Alienation on her part is a factor and there are many moving part in this case.
If the case is heard by the Pennsylvania court the judge will meet with child and consider the child's well reasoned preferences based upon the child's age and maturity. You will need a lawyer to prove parental alienation.