Does anyone know is njada is able to turned into a vamp if she is your spouse?

This quest I had spent alot of time figuring out but the wife's I can confirm that activate this quests are... Ysolda,mjoll, and house Carl's. camilla never worked for me nor did the werewolf chick (obvious reasons). I haven't tried any others yet.

I didn't realize it only worked on some spouses. I tried forever with Jenassa and never got it to come up. I killed or turned half the named NPC's in the game waiting on this one in the radiant quests.

Found this. This should help everyone

http://www.uesp.net/wiki/Skyrim:The_Gift

i found geting married after you do one of vampire side quests like killing a vampire idiots usually triggers the gift quest soon after but if get married before hand it wont happen unless your save didnt have dawnguard installed before hand.

There stange bugs with dawnguard. I seen few bugs in dawnguard got fixed cause hearthfire was installed also.