She is already aged, so disability is not really an option. You need to apply for Medicaid for her. Does she have Medicare already? Because if so rhen just apply for Medicaid.
I believe she has to apply for disability herself but it would be a good idea for you both to go to the office then apply you're going to need proof from a doctor that she cannot stand for long periods of time probably a doctor's note and then they'll give you a list of stuff you need to start the application
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