I think Michelle is in a similar position to Machel. 3 giants ahead of her, but if any slip, she will be able to pounce. She is the best of the rest IMO. So 4th place is what I expect, but hoping for a medal!!
To add to my post, I would think lane 7 is good for her. Firstly she's not the best curve runner out there, so the gentler the curve, the better. Secondly her technique isn't suited to high pressure situations and being in the middle of the track will be a dog fight coming down the straight. She can run free out there in lane 7.