Vent bc I deserved better bc I put my life on hold for her

So had to have the cops come to my house bc my 17 year old niece whom I have custody of not only shoved my 6 year old daughter down but then shoved me and attacked me bc I told here to hand over her phone for the way she was acting she hit me knowing that I might be pregnant like seriously it took every ounce of my being not to stomp here and the cops refused to do anything what's wrong with people today, is this what I get from being a good person all I have every done for the kid is try to give her a better life away from her mom who is a drug addict and in jail. I guess good people are the ones the get screwed in the end.