I would probably hug her and apologize for getting after her. But then I would kindly caution her again to leave mommy's make-up alone. Maybe get her some "play" make-up, old lipstick or gloss or blush that you don't wear anymore and give it to her in a pretty little purse from the dollar store.
Cutest thing! I love that, it reminds me of something my Sheldon would do - mischievous but so endearing.
Blast. She is pure genius. You are screwed. And out witted. Surrender now.