Personally, I abhor the woman. That said, I think the question should be, in every appointment or election, not whether or not a person is qualified—but, are they unqualified? She is not unqualified.
As an example–Jimmy Carter’s actions in the last years makes him unqualified as a SOS, he has demonstrated his anti-USA bias.
No, I’m pretty sure that US law specifically holds the embargo up if either Fidel OR Raul is in charge of the country. So it would take a lot to make that happen.