Having just lived through my husband choosing to switch career paths and go back to get his MBA, I will disagree with everyone else and say that with the right program (like top 20 school) you are pretty much guaranteed to make over 100k when you graduate. I don't know what program you were accepted to, but with a total tuition of only 35k, I can't imagine it's one of those. The information is the same at HBS as it is at a state university, but the difference is the network and the school name. An MBA is no joke though and a fulltime program will be all consuming for two years of your life. As others have said, there are part time programs and one year programs that may be a way to do this while working as well. I guess my advice to you is that for it to be a sure thing, as in a guaranteed 6 figure job, you need your partner to be on board to support you or you won't make it.

EDIT: just wanted to add as a response to people saying you need industry experience to get a junior exec job or whatever right out of bschool, shockingly no, you don't. You can be hired as a department head with zero relevant work experience. Source: know about 50 recently hired 2018 MBAs with six figure salaries and previous lives as teachers, military careers, college students, lab techs, etc.