Well I have been searching online and I really am completely pissed off over what I have seen... A huge important quest for getting rid of my damn vampirism issue and it apparently is undo able... I have a US GOTY ed Oblivion disc on the PS3 and I cannot give the woman any bloodgrass, but I was able to give her everything else. If anyone else knows of a way that I cant seem to find to get around this please let me know! Thank you for taking the time to read this.

This pretty much covers it :

http://www.uesp.net/wiki/Oblivion:Vampire_Cure#PS3_GotY_Vampirism_Cure_Notes