Season 10 is actually a great and for the most part consistent season. Sue Ellen becomes a vixen, and turns a two-bit lingerie operation into a stunning success.
But what is strange is why Sue Ellen and Pamela had a falling out in this season, I don't remember it being explained why. In the middle of this season, Pam is like a rock to Sue Ellen.
It is Pam who suggests that Sue Ellen quits drinking when they are out to lunch one day, and plants the seed in Sue Ellen's mind for which will later become her company Valentine, as she says Sue Ellen needs a passion in the world and something to love more than drinking alcohol.
But in the first episode of Season 11, while rest of the family grieves Pam's accident, Sue Ellen seems not to care. There is no scene of her crying. She casually applies her rouge in the mirror and suggests that she might stop in at the hospital the way she might drop off some dry cleaning.
Why did their friendship take such a hit? Even if the actresses could not stand each other by this point there was no reason a proper reaction could not have been filmed, one more fitting for the character's history.