Paranoia played a role in my last mental evaluation, which put me on disability.
Ditto!
I'm technically diagnosed schizotypal (schizophrenia lite I guess lol) in conjunction with Bipolar I. Honestly, the best thing you could do for your loved one is to be supportive! Do not judge them for their hallucinations or paranoia! They cannot control the situation in their brain without help (medicine, therapy and love) and if you truly care about this person, be there for them.
Many people, including myself in the past, are abandoned by their support system because it is an intense thing for "sane" people to deal with. In reality, leaving them be is much, much worse than you can imagine. It fuels their paranoia, and can create far more serious problems. You must remember that person you care about is not gone, they are, for lack of a better term, stuck in hell in their head.
I hope things work out, and good luck to you!