Manner of fact more often than not the word "ever" will appear in a negative/questioning statement.
You didn't mean "even" but "ever" right? Guess a typo.
Right that means "she never wants to see him". Much more horrible than "she doesn't want to see him".
I will never see you again, ever!
I don't want to see you! Ever again!
I don't want to see you again! Not ever!
It also could express a "normal" emotion, which doesn't sound as terrible as the above ones, just a negative statement:
Have you ever done that? I haven't ever done that before. = I have never done that.
In a positive statement, you will use "once" instead: I once did it. You're not gonna say: I ever did it.
If an "ever" appears in a positive statement, that'll mean "all the time; in history": He's the best man I ever know. (You're auto. having a comparison - among all the men you know. )