That’s… An extremely bizarre take on what happened, and on whether selling would be a good idea. The stock market almost never has anything to do with electoral politics, and electoral politics almost never have anything to do with what your market position should be.
Yes, your aunt has (probably) signed up for what’s essentially a scam. This is their whole business model, they know timeshares sound better than they end up being, so they intentionally trick people into signing contracts that are very difficult to get out of, so they can’t just dump it the moment they realize they don’t want it anymore.