Nice going Ana, only 5 games lost in two matches played!
QF is where you expect her as a seeded player, anything more would be a bonus now. She next plays the third seed Witthoeft, who was convincing in the first round against Honcova, but needed three sets to take out Dodin (WTA 557) in the next one.
Maybe there's some explanation for this that we don't know of, but the fact remains she is having a lousy season this year. Only one 25k semifinal in singles and occasional individual wins in qualifying of higher tier events is not what one would expect of a player like her.