Family Matters

The family member's children that I have been taking care of for the last couple of years have been committing extortion. When she does not get her way with my husband she threaten him. She does that in order for us to keep the one that we have had temporary custody of. Well, we just sent all of her kids home. She wanted us to get another one. I can not do this anymore. I need rest. Am I wrong to seem insensitive. My home will be clean and silent. I am really thinking about bringing charges up on her for back child support.
She is so low down and she lied and told us that she had an emergency; it turn out that she just wanted to go out and party. That in return would give us another child. I have never had a problem with this as bad as I have now. I know that my higher power will deal with her in his time. She is hurting her children especially the one that does not know her. Do you think I should pursue this in a manner of a legal case to get the one that I have had since she was a baby? She does not know her mom