Who Killed Mrs Henshaw?

[carp]

I was watching this last night, and I had to wonder who killed Mrs Henshaw? Clearly it is insinuated that somebody was watching her as she spoke by Allan's grave, and it couldn't have been Jennifer because she hadn't been in that house yet?

[I'm Blake]

That's a great question! I think its implied that it is Alan presumably in a posessed body. The movie was hacked to bits in editing and removed many scenes that were critical to the central plot.