Ronna McDaniel announces she's stepping down as RNC chair

The RNC chair is set to step down after the South Carolina primary, a move that was anticipated due to pressure from Trump. A formal vote is required to appoint her replacement. Trump supports Michael Watley, an election denier, and has also suggested his daughter-in-law, Larry Trump, for a leadership role.

What did the RNC chair say she would do after the South Carolina primary?

What is notable about the candidate Trump is supporting for the RNC chair?