I know its from the vanilla game but I was wondering..the old woman says her daughter named Fura (she doesn't tell you her last name) went missing and the guard captain says she never came back from her Imperial mission and thats where that quest ends..which made me wonder...is Fura Bloodmouth the old woman's daughter!?

I doubt it but I still wonder since Vingalmo is in the DLC and hes referenced in the vanilla game.

That's a good correlation. I haven't done the Vampire side yet, but do you have any unique dialogue with Fura Bloodmouth that could tell you when she was turned a vamp? Until proven otherwise, i'm going with this little backstory.

She mainly tells you she doesn't care for politics and she feeds when shes hungry sleeps when shes tired and kills when shes in the mood and after you complete the quest line she starts respecting you and encouraging you with sayings like "No one can deny your power now."

She keeps to herself unless you go to her for a radiant quest otherwise. =P

Could be she added Bloodmouth to her name and got rid of her family name so she wouldn't tarnish her actual family's name being Vampires aren't exactly liked in Tamriel.

Angeline Morrard was the old woman's name.

It's probably just a common name, I doubt that they are relate. Besides Fura supposedly died fighting the Stormies.

I'm sure she says that she was a member of the Stormcloaks in one of her dialogue things. If what I say is correct, then It couldn't be the same one, as Imperials and Stormcloaks don't really get on... Unless she WAS an Imperial and then switched sides to the Stormcloaks and then became a Vampire?
Never know...

When was Vingalmo mentioned in vanilla?

If I recall it was the Night of Tears book...college of winterhold questline if i recall is where you can find it.