Humans are social animals. Some ultra-tough, fit, lucky, armed, prepared John Rambo or ex special forces types might be able to survive, but most people will need a community around them, regardless of how well they think they have prepared.
If I was a woman with health issues I would find some useful skill to offer the community such as child care or teaching and trade that as part of a local community. In other words, kinda sorta like what happens today.
Welfare will be one of the last things to go. The moment Uncle Sam stops welfare checks you are going to have millions of people losing it and going on the rob.
Ultimately though we all need to be ready to make a good death. Whatever happens, or does not happen in our lifetimes we can all be dead tomorrow and will be dead before the next few decades have passed.