What is wrong with people

I had to visit one of my clients. She had been reunited with her mom again after 5 months in foster care. I go visit for a check up and the girl spills a drink so the mom kicks her in the face and makes her nose and lip bleed. So guess who had to remove a child AGAIN. This women had her kid back less than 2 weeks. I am so over this job. There's just too much wrong with people.