Indeed. I can't work out Heather. She seems to be utterly disinterested for most of the tour and shows no ability to adapt her game during matches.
Ever since she won the mixed doubles at Wimbledon she's just bombed down in singles. There were signs of a lack of motivation before then but it was really dramatic afterwards. I think she needs to go back to her old grinding ways.. If she did that but kept up the strong serve and add in some variety, such as the slices, dropshots and net approaches she employs, she could be a really good player.