Weight differences aside, Michelle's takedowns and ground game aren't good enough to keep Conor McGregor on his back.
Miesha Tate might be able to, or perhaps Cat Zingano, Ronda Rousey (pre-Holly Holm KO), Claudia Gadelha or Rose Namagunas.
They'd have to keep their distance on the feet, and take him down when opportunity presented itself.