Family Betrayal: My Ex and My Mother

I’m still pissed about my own family trying to find my ex,asking me questions about that deadbeat,abuser and calling my son asking him about the trash he hasn’t seen in years. If I did that to anyone in my family all hell would break loose. I was already betrayed by my mother inviting him here with his kids and wife and I sat in my room all day. Everyone expressed how they liked her but she never reached out to my son until she was diagnosed with cancer.