@sukaley
That only works if taught properly.
If you are just shown a few random characters and told what the final word is, that won't help you. Particularly when the final word is not even be pronounced as the aggregate of its components. A japanese example I remember is tree + tree = forest. (Ki and Mori) so if I show you the kanji for forest, tell you it's pronounced "mori" and leave it at that, it will tell you nothing about the word for "tree".
If you're smart enough, you might realize how it's made of duplicates of a simpler character, and you can have a guess that it means "tree". But more complex characters are not so obvious. The one you took from the story is definitely not a simple one.
When the component characters are different, even if you can guess what the component words are, how do you then match then to the characters?
You can learn that all by yourself if you dedicate a lot of time and/or know enough of the basics. But starting from very specialized characters and skipping the basics won't help a maid who has work to do and little time to piece a language together.
This... game of sorts works better the other way around. You learn the basic characters, then you can try to guess what composite words are. Even then, some feel like charades designed by a madman.
Like your very example. (Do you seriously think this composition is that obvious?)
I can only expect Mao Mao to switch to better instructions, or this poor maid will have trouble learning much in the little time she has.