>There were some head scratchers too. Like, how did Deena heal
>from her wound. It was like the ending of part 1 never even
>happened. And Sarah coming after the person who's blood her
>bones came in contact with, didn't square with the Goode
>family being the cause of the killing sprees.

I don't remember the healing thing so I'd have to rewatch to clear that up for you (I watched the series over the summer) but the second part was clear...Sarah wasn't coming for the person who's blood her bones came in contact with. She was trying to get them to help her...to show them the truth. Most of part II was a flashback based on the bone touching...to show the truth.

The Goode family sent goons once they figured out the person was trying to help. So the story never got out. If Sarah showed them the truth and they tried to expose the Goodes, their whole facade falls down. So the Goode family was conveniently killing anyone who got even remotely close to the actual truth...that their family were the ones dealing with the Devil and Sarah wasn't actually a witch.