My memory is pathetic but I seem to recall something a few years ago where Patricia Heaton refused to be a part of something on moral grounds. I can't remember any details but she showed her un-Hollywood character then. I've admired her since.
Heaton is a staunch pro lifer and active member of Feministsforlife.
I think you're right...she got up and walked out of some event because she found the language offensive...can't remember what it was...she essentially said that she had better things to do with her time than listen to some knucklehead's crude and unfunny rant.