My question involves a marriage in the state of: California

I got married to my wife four years ago in CA. She's a foreign national and she got a ten-year visa based on our marriage.

Over the last year, our relationship has soured, as many marriages do. I do not have any desire to be married to her anymore, and want a divorce; however, she is holding out that she won't sign papers for it until she gets her citizenship. I moved out, and she sent in papers anyway to start the citizenship process; now, USCIS wants proof of her traveling to see me and me to see her, of joint finances, etc; this proof doesn't exist, because it's not true.

She's now threatening to "ruin my life" if I don't play along with her; I have literally hundreds of texts back and forth with her in which I tell her repeatedly that I want a divorce, and texts from her stating that she'll make sure I regret this, she'll ruin my life, admitting that she lies to me habitually to get what she wants and chiding me for falling for it, etc.

What really gets me is that she still has about nine years left on her greencard... she just wants to work for the TSA because one of her family members told her it was a "good job," and she needs to be a citizen to work for them. She initially agreed to the divorce but reneged on it after that conversation. The TSA of all things...

What sort of recourse do I have here? She's stated that if I file for a divorce and try to have her served, she won't sign for it. This whole thing is eating me alive.