Well, we have to give credit to the Dark Lords - they took on a full powered and fully awake Alucard and sealed/put him to sleep, with Lady Akasha putting the finishing touches on the deal.
And as much as Tsukune has developed, he is not anywhere near Gyokuro's league - she ripped a pillar from it's foundation and tossed as if she pulled a stick out of the ground and threw it javalin-style.
Besides, she can probably sense people so well, she can probably read the youki flowing through a person and 'predict' what they'll do based off of that - not unlike what Teresa of the Faint Smile could do in 'Claymore'. Not saying that's what Gyokuro can do, I'm just stating the possibility of that ability coming into play.