My DD (7) is becoming increasingly clingy and anxious after being with her Dad. He says she's happy when she's there and I have no reason not to believe this, but she doesn't like his GF and he refuses to speak to DD about this. Regardless, she's so clingy and upset for a few days after she's been with him. It's getting worse not better. We've been separated almost 3 years now. Has anyone experienced this?