My LO keeps patting her blanket over and over again. What's she trying to figure out?

I would believe it's a way of calming and soothing himself/herself.Repetitive behaviors are thought to help toddlers release tension and extra energy, and act as a calming influence. Toddlers often do these behaviors when they are still full of energy but need to wind down and fall asleep (i.e. before naps and at bedtime). They may also engage in these behaviors during a developmental transition (like potty training) or during a season of transition or stress (like during a move, or during the birth of a new sibling).