Thinking Mike Espy would be “better” for Mississippi or the nation is complete stupidity. That’s like saying Joe Donnelly voting 90% with the democrats for six years was “good” for Indiana or Doug Jones voting against Kavanaugh was in any way the will of the people of Alabama.
Her vote is not needed for any practical probability.
Not for confirmations.
And we are nowhere near 60 votes to break legislative filibuster so she can’t help there.
Whether she would be better than Espy is a moot point. Her vote is not needed.