This can be quite a problem.
No matter how harsh or insensitive it may have sounded, Maximilian was saying the truth. Lady is getting chubbier and chubbier by the day.
And she does not want to.
After all, as the almighty villainess of the story, she must always stay in her top form so as to appear fabulous yet formidable. She has to be an exquisite-looking maiden who is like a lovely little flower that is of slender figure and elegant curves – or so how she described the main antagonist, at least.
This whole thing about physical features may not be guaranteed to have an important role to play in the progression of the plot, yet based on how Lady imagined the characters to look like, this was the perfect way to present herself.
"I must work out from now on! I have to remain in shape! I'm a righteous evil flower, after all!" she declared with finality, steeling her resolve.