Good job, Tanya. I'm glad your difficult child is safe for now.
I can so relate to this. Accepting this pattern is part of what helped me get to the land of detachment. I've learned to squash my initial PTSDish reaction to a difficult child "crisis," and to instead take a deep breath and tell myself to wait 24-48 hours before even giving it much thought. Things change quickly, so my worry is wasted energy most of the time.