Texas stabbed her husband mistress in the kitchen.

Are you sure she stabbed her? - Is it possible she used an ax?

Sorry, it is called A Killing in a Small Town. Thank you

Dang nabbit! I just found it too, you beat me... glad you found what you were looking for though... :) (I remember watching this waaay back, there was something weird about one of the women saying "shh, shh" or something that triggered the other woman when she attacked her... )
A Killing in a Small Town (TV 1990) - IMDb

Im such a lmn fanatic, and after watching the blue eyed butcher this weekend it made me think of the it. A killing in a small town was one of my fav. Although it pisses me off that she got away wityh murder regardless of her past diagnosis but Susan Wright was a product of battered women syndrome and got 25 yrs in jail. Wheres the justice??

I agree, I guess jury selection is key sometimes... this is kind of interesting, the 'true' story of what happened...
The Murder of Betty Gore — Sexual Yearning — Crime Library on truTV.com