You all are probably right about her being the foster mother, that’s the feeling I got from how she said Emma’s name. If so, I have a Dark-Curse-shaped problem with it, because the Curse was supposed to be a necessary thing for Rumple to get to our world, he spent centuries planning it, then 28 more years before he could get out from under it…but SQ could somehow pop on over to our world to be Emma’s foster mother?