Youyou’s new words

Last week (Friday), when at friends’ house, and the hostess offered snack, she asked “这是什么呀?(what is this)”?

Today, after we put her to crib, when my wife and I both read iPhone on bed (her crib is next to our bed), she said “在看什么呀?(what are you reading)?”…Later, she also said “what are you doing?”