Okay her father and I are not together, he visits her 2/3 times a week time ranging from 20 min to an hour just depends, I never limit him but that's the time he chooses. My daughters behavior is normal all throughout the day and once she sees him when we get home she wants to kick me and bite the shit out of me, throws things, and be completely unsettling till she falls asleep. He encourages aggressive behavior and I've asked him not to, but her whole demeaner changes after she sees him? Is this stress? Because I don't know what to do or help her cope:(