I don't think Elisha is resurrected. I think she just took the dead doctor's name and is carrying on whatever her weird experiment is.
I like that the mayor found the will, and he also provides some humor.
Overall, I really liked it, even though there were some "idiot plot" moments. If the characters hadn't acted like idiots, the bad thing wouldn't have happened. For example, leaving Vic after surgery with John and not sharing critical information.
And yes, I think Sarah will come back evil and that will eliminate the love triangle. Which is convenient. I liked it complicated.