Mentally disabled spouse

My spouse has never worked, and has always stayed home and taken care of our two children as she took college courses to later prepare to enter the workforce. However, recently, right as she began to apply jobs, she had an emotional breakdown and is not functioning at all. She has federal student loans due and I can't pay them for her. I assumed she would be able to work and I did not forsee her condition coming on so strongly, although I should have because looking back I don't think she was ever able to work in the public. Does she qualify for a discharge of her student loan debt? Also, by her never working outside of the home, could she apply for disability under my earnings even though I earn a descent amount? The entire point of her taking classes was for her to work but in her condition I don't think that will be happening any time soon! What can be done for her?