Whoops, accidentally posted that last post here instead of my LTTP thread.
I bet that was a nightmare. When I saw that not only was I going to be poisoned the whole time but she was also regaining her health I figured there must be some way to get rid of the poison.
I searched around for a bit before consulting a guide, I doubt I ever would have figured out the windmill trick on my own. For future reference, if you walk up to the windmill with a lit torch you can press x to light it on fire. If you walk over without a lit torch there is no indication that you can interact with it at all, and from what I know there are no hints that this is an option.
In scholar, there is a summon that will point it out to you. In the original you have to rely on other folks leaving messages.