Hi and welcome to the forum
I'm not sure about treatment centers in your area. But a quick Google search for "free mental health clinics" might solve that for you. I know there is such a center in my area, and we take full advantage of it! It doesn't offer 24/7 care (most do NOT). But they do offer therapy, life-coaching, and medical care. And the three combined have helped my partner SO much!
This site offers a lot too. If you look to your right, you'll see links to a LOT of reading material and videos that are very helpful.
I'm sorry you're going through such a tough time. I hope this place offers you some solace. Even if you can't fix the relationship, it is never too late to work on yourself. "Fill your own void", as my therapist likes to say.
Good luck and best wishes