Wife feels spirituality connected and blame my family that we are doing black mazic so she left my house with 6 year old boy

We are married almost 12 years. I am 40 years old and my wife is also 40 years old. 8 months ago, one day she told me that she saw an angel at midnight and she become an earth angel who is connected to god. She can feel everything happening around her and started blaming that myself and my mom is doing black mazic on her and my son. Then she left my house with kid and started living in rented flat. Her parents are also believing her thoughts and supporting her. She frequently travelled to Kerala and Goa for few weeks because she feels that she is being instructed by God to do so. I tried in every possible way to make her understand but as her parents are supporting, she become too much aggressive. She used to see my son sometimes but when she saw that I have very good connection with my son, she stopped me to visit my son and pressurizing me to give divorce to see my son. She always blame me that I am doing black mazic on her so she wants to seperate to save my son from me. Now she has moved to other city with her parents help. I don't know where she is. My son has ADHD and autism. She stopped his treatment also because she feels that with her supernatural power, she will make my son alright. I was hoping that she might understand that her thoughts are wrong and go to doctor but she become more aggressive. She is doing her work from home job properly. We did not have any major dispute since our marriage. We were living happily. What should be my approach now to save my family or to get my child.