Why turn around?

We were having lunch and 妹妹 insisted on having the steamed egg 哥哥 is having. I got her a bowl of steamed egg with some rice in it. I filled her spoon with the eggs and rice and wanted to feed her but she wanted to feed herself...

妹妹 : No ... here, here ... *asking me to put down the spoon*
妈妈 : Okay, you eat.
妹妹 : No. I don't want. *she doesn't want the rice*
妈妈 : No, must eat with rice if not 妈妈 feed you. *she quickly pick up the spoon*
妹妹 : Turn around, turn around. *asking me to turn around and not look at her*
妈妈 : Okay, you must eat ... *and I turned around back facing her but peeking at her*

Guess what she was up to?

She poured the spoon with the rice to a side of her bowl and scoop up the eggs only to eat. When I turned around a look at her. She looked innocently at me happily eating. *faint*