Thank you for the additional questions.
1) The age in CA for the court to consider the wishes of the child depends on the educational and emotional maturity of the child and age is not set in the statutes. The courts evaluate the child's emotional and educational maturity to determine if they are aware of the decisions they are expressing and if they are in the best interests of the child. The child's wishes are only one factor the court considers and are not always the determining factor. Your son is very close, depending on maturity in each individual case the age range is usually anywhere from 12-14 when they start considering the wishes of the child.
2) You need major or significant changes in circumstances for the court to revisit visitation modification. The fact the child is running away and if he has a therapist willing to testify in court about the harm caused by this additional visitation time with your ex, then this could be significant change in circumstances sufficient for the court to change visitation rights.
3) If the court is perceiving you as interfering with the relationship with the other parent, then you need to get support from the therapist to show that he is being damaged by the ex's conduct. The court may, and it may be at your cost, so be careful, appoint a guardian ad litem to represent the interests of the child. Realize these cases are very traumatic on parents and the children involved and the court is stuck in the middle with having to listen to both sides and make an evaluation, so you need to present expert testimony
to support your position about the harm this is causing the child.
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