Temper tantrums

How can it be that this adorable girl throws temper tantrums? 

Well she does so much in a day -- all on her own now.  She grabs her books and earnestly tries to comprehend the pictures.

She crawls and cruises all over the house, she pushes herself to stand alone, crawl into and around hard to maneuver places, conquer the stairs, communicate more.  I guess she is deserving a few temper tantrums.  :)