DD previously was spirited, occasionally challenging but fun and loving and generally well behaved. over the last few days she has been absolutely revolting, answering back and hurling things (like pillows) around, being very rude and refusing to listen. she's even shoved (gently) her beloved dog. she won't engage in any conversations about it and just says she's not being rude . I've taken screen time away but its not helping. help!! any thoughts ?