Full disclosure-- I did tell her she could drop by if she wanted to last week, and she did just that.
Jim,
That one sentence that you forgot to mention changes the entire story.
IMO if you are in the friend zone right now and the longer you stay in it the harder it going to be to get out of it. She is going to continue living the semi-single life throwing you little crumbs until OM2 comes around while you continue to put her on a pedestal.
IMO very soon you need to have the conversation with her and find out if she is in or is she out on being your wife.