Green thumbs: How should I over-winter my potted lily?

I have a potted lily, which started life as an FTD sympathy plant a few years ago. Because it’s poisonous to dogs, and we have some wild pups, I put it on my mostly-shaded porch this summer and it thrived.

Now that temps have dropped I want to know if it would be okay in my office over the fall/winter. I have a window that allows enough light for my pothos to do really well; what kind of light would a lily require? I don’t want to bring it back in the house with the doggies.