You need to get a prescription that is very specific. The supply company will tell you what you need. Easiest place to start is to find medical supply company that accepts medicaid and medicare. Its very hard with medicare. Only a few are selected. Try Roberts. We called a bunch recently and called them but they told us to go ahead and buy the walker as you can only get one walker or wheelchair every five years and a walker is cheap.
http://www.robertshomemedical.com/index.htm
Social services is a joke. There is supposed to be a program for some income help but we could never figure it out. There is a waiver that pays for 8 hours of in-home a day but you have to be in a nursing home for a certain amount of time first.
Medicaid does pay for nursing home care - its a different one called long term care. The catch is you have to find a nursing home that will take it pending and hope she gets approved or private pay till medicaid kicks in.