How is her life more difficult? Because I know a lot of people who are enduring difficultly world-wide. Sanchez ain't one of them.I think Sanchez is the one being exploited here. I say this as an old-time feminist. Bezos is the one with the money and power. What is he getting from the relationship? The appearance of sexual potency at 60+ years. That's a big deal to a guy like this. Worth whatever it takes to keep a lovely young wife. Look at Rupert Murdoch and all his young wives and flings.
I don't think Sanchez should marry him. And maybe she doesn't want to. In 6-12 years she may end up doing elder-care. That's a soul-crushing situation to bear. Leave it to his ex-wife and children.
I wish her well. I think her life is more difficult than social media would have it appear.