If ALFs and memory care costs are too much for my mother in about a year, can anyone advise on other options?

This is a common occurrence. What she will do is private pay, then when her money runs out, Medicaid will pay. Not all ALF's accept Medicaid though, so make sure the facility she goes to does.

This was my post to a previous similar question:

Aside from Medicaid, there are other ways to pay for LTC. Unfortunately, you must have previously purchased certain financial products to have the LTC options. Does your mom have an annuity or life insurance policy? If so, beginning to annuitize the annuity policy can help by getting monthly distributions from it. If she has a life policy, most policies allow for accelerated death benefits where she could take a tax free cash advance on the face value of the policy. The remainder of the death benefit would still be in force. Call the insurance companies for specifics.

Another option is to sell the policy for less than face value to a third party who will become the beneficiary. These are either viatical or life settlements.

The nursing home should have gone over it with you. But she will have to go on Medicaid & that should cover it.