Well honestly since you are in your 20s and have no formal diagnosis or disability (or at least you insist that you don't), it's unrealistic to expect someone to take care of you. Now it's not a bad idea to move in with grandma and help her out by taking care of her (not the other way around). If there are no jobs out there though, it could become an issue. I personally believe you need formal diagnosis and professional help, then you could qualify for subsidized housing and/or assistance with group home and employment