She's perfectly entitled to her feelings. Who argued she wasn't. But a) he doesn't care about her feelings; b) he isn't IN a marriage (I thought you'd know that by now, there is only one person "in" these marriages); c) she's the one that supposedly wants to save the marriage; d) she's using "then I'll get a lawyer" as a club to beat him into staying (think that's going to work?) I'm just saying, if I was the one conflicted about staying in the marriage or not, none of what she said would push me towards staying.
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer