I wonder if there is some aspect to the curse that doesn't allow for that, as surely some member of their family must have tried. Maybe if they abstain entirely they get a progressively increasing hunger.

Inducing labor seems to be the way to go here. If the baby is born without a hitch you know that the baby isn't causing the time loop and you can see your daughter.

If that causes the loop, you know what is causing it. At least you will know the cause, what you do with that information is up to you.

As a Rimworld player, I am very very concerned now.

People used to take pills with tapeworm eggs as a diet measure intentionally yes. I think it originated in the victorian period, but could be earlier.

>She thinks if he just would’ve turned we could all still be together.

To be perfectly fair, that is true though, you would be. At least, you'd all be alive....ish.

She has shown immense patience to you, granted she is immortal, I don't think you need to worry about her changing her mind. If she was willing to honour the wishes of the man she loved as he lay dying, I think you will be fine.

That said, even if you choose not to take the embrace, you should have a relationship with her. She's shown you nothing but patience and understanding. I agree with other posters that blood relations don't necessarily mean anything, but she has certainly done right by you over the years.

If you are that worried about the murder, even if she is killing only bad people, maybe you can try some experiments with her. See how alternatives like blood from a blood bank or otherwise willing donor would work out. If you can come to an arrangement where she won't necessarily need to kill anymore, it might make things more appealing for you too.

EDIT: Also I am no expert, but I don't think vampires always have to fully drain their victims when they feed. Murder is not necessarily the only option.