well i have no advice about the kids because my kids are my step kids and i only see them 3 times a year. but i know about bad days. i just had one on sat. everything seemed to go wrong and i spent the entire day crying, but it was good because i felt better the next day and the next. i can only imagine myself in your place. i would go outside and scream at the top of my lungs lol. i used to be one of those kids that disrespected my mom especially when dad was gone. she should've smacked me upside the head( sometimes she did). i don't know why i behaved that way and still don't but probably related to dad being an A. mom never got us help so i guess i just did what i knew to do. hope it gets better for you.