I have a 3 yo son w/ multiple special needs. I have joint physical and legal custody with his father. I handle most of my sons care from doctors appointments to therapy, to his general medical supplies.The father has assisted very little with our sons needs and seldom makes it to any important appointments. He also does not follow the custody order. His father has recently married and wants the step mom to act as an additional aid to all of this. He wants her to be allowed to make decisions for the child (without consulting me) as if the child was their child. My son has his fathers last name which is also hers now. Most of my sons physicians know that I am the legal guardian but the pediatrician has disclosed personal info to her and has allowed her to bring him to appointments without my knowledge. Medical issues aside, has anyone experienced and successfully worked through this situation?