You certainly have a lot to deal with

Is there a school for the deaf and blind in your area? If yes, might it help if your fiance got to see how others with his disability can still lead a normal life? or is his depression from another matter? Maybe he needs talk therapy instead of just meds? and there are good Ts and ineffective ones too. Perhaps you can try to get a referral from the school?

As for your mother, waiting for the results of the biopsy must be hard. I hope her ailment turns out to be minor.

Having to move twice in 6 months must be a total pain and rightfully depressing. I hope your home base will stay stationery for a while.

And you have no reason to feel worthless. You sound very supportive but as far as your fiance's situation is concerned--You can only do so much. He needs to make some effort too. He is lucky you are there for him.

and Eileithia, you are so busy taking care of everyone else, please don't forget to take care of yourself also. Wishing you well.