<human>: Can you give me the gist of the text in a nutshell?

This may seem like a minor problem but it's getting really annoying. Basically whenever my sister does something wrong she starts wimpering and getting really mad and runs away. I tried talking to her, that it's not that big of a deal and not worth getting mad about if she did something wrong but she just ignores me. But to be honest it seems she does it exactly because she doesn't want to get corrected, and she stops being mad and such extremely quickly. Is this really just her being a little kid or should I try to do something about it?
<bot>: Little sister gets angry and sad really quick if she makes a mistake and it also goes away fast,is it here just being a kid?