hi guys looking for help with this quest

this is for ps3


i have full completed the dawnguard dlc, and i have spent at least 6 - 8hrs doing sidequest

i have done the main side quest (ring, amulet, etc)

some of the quest have been repeating

as much has i love the dawnguard quest am getting tired of doing them over and over and not getting the quest "the gift"

i'm guessing the quest is glitched maybe or my wife is glitched


my wife is camellia from the riverwood shop, i got her earlier in the game before becoming a vampire

i have checked the wiki's and it doesnt say that she cant be a vampire


can anyone tell me if this is a bug or am i just very unlucky

i thought i could remarry but turns out i cant


any help would be great, i really wanted to turn her into a vampire but i'm guessing i wont be able to do it

thanks