Maybe Christine wasn't feeling well (dizzy, light-headed, severe headache, fast heartbeat) while running routine errands and returned to her car to rest. She didn't have her cell phone, and anyway may have thought her ill feelings would leave after a brief respite. "I'll just take a break, kids, before we go home." Unless the children have something suspicious in their blood tests, I cannot imagine suicide under the circumstances in which Christine would have the children with her. Being depressed or "acting strange" or experiencing marital problems are a far cry from suicide, IMHO.
Those poor children. Perhaps more will be learned from the oldest daughter in time. The autopsy should answer a lot of questions, too.
Those poor children. Perhaps more will be learned from the oldest daughter in time. The autopsy should answer a lot of questions, too.