Why there is "et" before the strawberry, but there is not one before the soup? Sorry if the stupid question.
I believe its because et is "a". You wouldn't say "she is eating a soup". It is kind of weird that there's only one strawberry, but they're trying to keep it simple early on so ¯_(ツ)_/¯
Well, she does - Quirkyowl ate the rest of the punnet while she was having the soup.