re: Crackpot ASOIAF Theories SPOILERS

Also, as a non reader that's just been spoiled about Jon Snows future and then just said frick it on the spoilers and read all the theories and pieced a lot together I have a question....


So to my knowledge, whenever Stannis rode on Winterfell (or tried to) in the books, didn't Mellisandre stay at the wall? Which opens up the possibility of her resurrecting Julius Jon Snow Ceaser, no?

I ask because in the show she left with Stannis...so how does that play out? Does that mean Stannis will have to retreat to the wall around the same time Snow is coming back from his trip beyond the wall for the wildlings?

Or did I just completely whiff on what actually happened in the books?