The innocence of discovery

I think I have just witnessed the sweetest and sadest thing I have ever seen. Lanie requested that I set up her pop up tent. I set it up and then she sat in it for a min and then was done. She said she wanted to eat so I got her some little rice cake things. She poured them on the floor. I went in the other room and came back and her and her snacks were gone. I peeked in the tent and saw her sitting there, chewing, legs stretched out and crossed, and her hands over her ears. My heart broke because I was not playing her with her. Was she scared was she sad did she wish I was with her. Then I though that maybe she was just discovering what chewing sounds like. My heart is broke.