I'm not convinced Michele will nominate Russell. I think she's smart enough to know that sometimes your best allies in the house aren't necessarily your best friends. I believe she's 100% loyal to Jeff and Jordan, and will only go the way of the Girl Power if Jeff is evicted. None of the girls have ever done anything for Michele, with the exception of Jordan, who has been her one and only friend, and I think she will protect Russell out of her interest in keeping J/J safe.
That is, of course, if the rumors are true...