Why Marble is so ''shy''

I beg that you consider ruminating about the artist's nationality and knowledge of the english language if you by any chance detect a higher than zero number of grammatical mistake(s).

And i-if you please.. refrain- err... don't laugh at me?

So yeah, crazy headcanon I came up with. Marble doesn't talk because she's afraid of what other ponies will think of her inexplicable need for using really long and unnecessary sentences for anything she says.

Time taken: Around 5 hours.