This month's issue (yes, the one with Trisha Yearwood on the cover) features the fourth installment of the compelling series in Redbook magazine about a mom of a 2-year-old, Ryan. The magazine chronicles Nicole and her husband's life with Ryan and their other children.

She went into Ryan's room to get him from his crib, and he wasn't saying "mama" as usual. When she lifted him up, he tried to push her away. Distracted by her daughters, Nicole left Ryan for a minute. When she returned, he was on the floor with his back to the door, rocking slightly, and painstakingly lining up toy cars in a straight row. "At that moment, time stood still," says Nicole. "I desperately called his name, but he wouldn't turn around. I wasn't asking one more person if something was wrong; I knew there was."

Here's the entire first article, if you haven't read the series. Can you relate to her story? What part hit you the hardest?