Three months ago she could not have envisaged being in Beijing .
The speed of her progress since then , the latest evidence of which was three season 's bests at the Anniversary Games at the end of July , has taken her by surprise .
Three months ago she could not have envisaged being in Beijing , but the speed of her progress since then , the latest evidence of which was three season 's bests at the Anniversary Games at the end of July , has taken her by surprise .