The Face Mystery

This morning, M went into the girls' room to turn off their nightlight.  He turned to look at F and was surprised to see her messy face.  He came out to me and told me F's face was worthy of a picture.  But it was too messy and how could she have gone to bed with such a mess on her face?  I told him that he was the one that brushed her teeth so he was the one that should have washed her face.  I was thinking there was food or toothpaste around her mouth and why is he making a big deal about the mess?  When F woke up, I saw what he meant:

I found a marker, with no lid, hidden amongst her blankets.  Someone was busy before she went to sleep last night!