(a repeat topic, but now with proper subject line & properly marked as a question)

I know it's possible, with the right background, to propose marriage to Anora. I believe this occurs during a conversation at Eamon's estate. But when can this conversation occur - does it have to be right after the rescue? Or is it after the Alienage, perhaps? I can't seem to get this conversation option though I have met the requirements, and I'm wondering if I'm just trying too early.