As a student who is currently in finals week herself and who also has a family member (albeit not a spouse) in the middle of a breakdown who is putting her in an uncomfortable spot, I say you need to think about you right now. College is really tough--a master's degree even more so, and it's not cheap! You're both adults, and while this is really difficult, this is not actually life or death. Going through a mental crisis or a crisis of any kind really stinks and gosh, you sometimes grasp at anyone to be there for you, but it is certainly not okay for him to abuse you in the process. It's appropriate to help him find support and therapy if he's open to it. If not, and if he continues to be abusive and blaming, there is a boundary which you must draw for yourself between being a supportive wife and looking out for yourself. Saying, "Husband, you are an adult and need to put your big boy pants on and if you're not going to support me or not capable of doing so at least stop passing blame onto me and expecting me to be your scapegoat. While you figure that out, I'm going to go do what I'm doing and work on my master's degree" is not inappropriate or harsh. It's healthy. I had to draw this boundary with my family member--for me, it meant telling him what I could and could not do for him at this time in my life. And when he did not respect that, it meant deactivating Facebook, not returning text messages, not returning emails, and not allowing other family members to make me feel badly about doing this.

I wish you the best.