From the start, from someone who enjoys a little nice fashion now and then, her awfulness has been startling. Her clothes are too tight, always draw too much attention to her junk and her thighs. She scowls, she clomps around bowlegged (teach her to WALK!!). She always embarrasses.
And it's just a darn shame that her upper-middle-class Chicago mamma and daddy wouldn't get her braces for that bulldog underbite.
My opinion? (not that you asked.....:-) )
I don't know this for a fact, but can guess that the WH has entire legions of people dedicated to comportment, style, etiquette, modes of address, and protocol. There are legions more who would help, just to have the access to the office.
The fact that Moochelle hasn't taken advantage of any of this, speaks loudly for her character.