The fact that she eventually needed the social security checks shows that it was in her natural self interest for the system to exist and for her to pay into it. A safety net, whether or not you will ever personally use it, is something that is good for society overall and serves everyone’s self-interest by being there to catch one when they fall.

If you’re walking a high-wire, it is in your rational self interest to use a harness. Even if it costs money to ensure everyone gets a harness, and suppose you even have a high enough “skill” that you never actually get to use yours; a world that you never have to see anyone fall to their bloody death or worry about your own death is certainly better than the brutal alternative for the amount you pay into the harness.

If you go to a festival and there are paramedics on standby, just in case; the paramedics have to get paid even if nobody ends up needing them, but they are there because the chances are high enough that somebody could get hurt and the response will be much more efficient with better outcomes if travel time to the venue isn’t a factor. Nobody plans to get hurt, but everyone pays into it through the ticket price. It is in everyone’s self-interest to have them there. If you follow Randian philosophy, it is only in your interest if you happen to be the one that gets hurt, but this is entirely unpredictable.

She’s a hypocrite, because she herself is not able to fairly assess her own natural self-interest but her philosophy expects everyone else to be able to do so.