[ Whoops. She didn't expect that for her first response ]

How did you come back? Did you do it?

[ Her many wondering options are a) was it a supernatural thing, b) was it some other thing, c) did the people that brought you here do it?

Also, even though Lydia knows why she wants to know, she's not entirely as sure on what specifically she wants to know ]

I know that people die. I just don't know how many people know it more than knowing someone who has died. [ Aka 'is what is happening to me a more regular occurrence?' She'll get to that ]