CJ,
Is the CPS agency willing to come in & restrain when your difficult child is presenting self harming or dangerous behaviors toward others? Just something to consider.
Sad to say, it took a couple of years to recognize/accept the fact that kt & wm were so incredibly delayed. I wanted to believe that it was defiance because the alternative haunted me, for some reason.
Having said that, we need to go back & teach the tweedles very basic skills. Using utensils (my children still struggle with knives & forks), eating with-o messing their clothes, dressing themselves appropriately - very basic skills.
I hope you have a calmer, more restful day.