I share joint custody with my ex in AZ. She refuses to consult with me over medical issues or most any issues for that matter. She has taken him to a medical provider outside of my insurance that is very expensive & is expecting me to reimburse her for the several hundred dollar co-pay (even though it would've been free if she went to an in-network provider). Can I refuse to pay it as she did not consult with me before taking them? Thanks!

