Answer:
So basically the "better" part was sarcastic, She is confused because someone told her that she was doing better but she doesn't see her good results.
Answer:It must be made by literary critics.
Explanation:
I just learned about this!
Well if its a "real word" may depend on dialect, or where your from specifically. There are many words in Texas not really recognized as "real words" like "y'all" or many things like that. Perhaps it is a word somewhere. But I have never heard it. Remember, language is like a liquid, always shifting, and changing.