I'm so sorry. I can relate to you losing your grandmother. It was similar to my father. My heart broke and will never be fixed.
As far as employers, it's illegal to base your hiring on whether you have a disability or not...actually , I don't think you have to tell them. You have a right to ask for reasonable accommodations in your job to enable you to do the work. Are you in the US? Have you looked into Social security disability? There are many benefits to help you pay for food, rent, electricity, etc.
I'll be hoping you get all that you need. Don't ever feel like you're a bother.