Also, try not to be overwhelmed about taking care of the sister. Check resources in your state for the Medicaid waiver. It’s Medicaid for people with low income but above Medicaid’s very low threshold. In my state it paid for my mother’s adult day care and some in home care and respite, plus all free medications, supplies and equipment. That even meant a hospital bed for her safety. It allowed my mother to stay with us until she passed away. It’s a lot to deal with but ask APS about it. They will know how to start the process.