i don't think she is still working with her as a coach. myriam supposedly has a thyriod problem which inhibits her ability to lose weight. i can't say whether this is valid or not but i have heard a lot of things about extreme diets etc. apparently molitor did not feel she could help her because of the condition she was in.
myriam has had some great wins for a player carrying so much extra weight and has been extremely unlucky this year, losing many tight matches to players who have gone on further in the draw. her start on tour was so impressive beating molik in fed cup, then making the final of budapest in her first tournament, 3rd round of wimbledon, won brussels in only her second tournament and beat henin hardenne in germany. the difference then was that although she carried weight she was just chubby and her game wasn't really affected, whereas now she is just too big and she lacks a bit confidence. she had a series of awful first round draws last year as well where from the australian open to wimbledon she played mostly first rounds against henin-hardenne (two tight sets), serena, clijsters, mauresmo, dokic (losing 5-7,6-7(12), zvonareva (losing in three), seles (losing in three) and capriati. so she had like half a season where she basically got no points.
she has been given a big chance here as a lucky loser into the second round and she needs to take advantage.