My bestie has brought her granddaughter over for a playdate every week since spring break.  Most days she mouths the word "wow" at the boys toys and stares in awe at their acrobatics. 

Until now she's treated us like she didn't expect to see us again. She interacted with the boys but at arm's length and there was no interaction with me.   This last visit was very different. She spent time studying our faces and she even smiled for me...  a little.