You or your father or aunt need to step up and assist your grandmother in handling her affairs. If no one does, the state agencies will step in and appoint a guardian for your grandmother. Most likely, she will wind up in a nursing home and Medicaid can use any assets in her name to pay for her treatment and care.
If you or your family need to speak with an attorney in the area, you can contact my office by email. But you must have a conversation and reach some agreement with your family on who is going to take care of her if she is unable to take care of herself.
Regards,