A McDonalds trip to remember

The girls and I had lunch today with my mother-in-law's cousin A, who is living in Tucson this spring.  It was fun to catch up with her, see how things were going, and see her again.  We went to a McDonalds because I figured that we could talk while the girls ran around in the play area, which is exactly what happened.  At nearly the time that I thought we should get going, E decided that she wanted to play in the play area naked, and so she took off her skirt and underwear.  I think she was going to go for her shirt next when I caught her (thankfully) and redressed her.  After we got home, I asked her why she decided to take her clothes off?  She said because she wanted to play naked.  LOL.  I don't know how to tell her you're not supposed to play naked in public!  Silly silly girl.