My Daughter’s Behaviour

My 20 year old daughter is being very promiscuous since breaking up with her boyfriend of 3 years. On the one hand I’m happy she continues to include me in her life, but on the other hand I have so much fear for her. I worry this behaviour comes from a place of insecurity. I worry that she will end up with someone who will abuse her. As a mother, I want to protect her from all this. I know I can’t. I know I need to just be there for her. I know I may shut down conversation if I say anything, but I am afraid for her everyday and don’t know how to shut that off.