That reminds me of my dd, too. She's busy drinking it all in. She'll tell you all about her reaction later, but in the moment she looks dazed. She's only five and has introvert times for sure. She was telling me how she likes to sit alone at recess ( I know she also has played w her friends, wildly) and tell quiet stories to herself and observe. I just told her I remember playing solo (playing secret garden, in fact, which we are currently reading), that she should take her break however she feels beat, and that I loved every bit of her. I trust her!
