Learned something new with custodial vs skilled. Looks like u may have to look into an aide. Call office of aging and medicaid. Friends were able to get help thru Medicaid since MIL has no assets.
Was mom married to a vet? Also you may want to consider an adult family home. The cost is usually 2500-3000 a month. My mother now lives in one. It has 6 residents, and with her va benefits and ss we can almost cover the cost so we are able to stretch the little money she has left.