While many want to see this scene, and the surrounding arcs, manifest in the show it isnt entirely certain as how much of it will make the small screen or indeed whether any actually will at all. Certain parts - i.e. all those involving Lady Stoneheart - probably wont make the mix; after all Michelle Fairley and director Alex Graves have both said that Catelyn is dead. Many fans of course think theyre deliberately being misleading, so it's clearly an issue for interpretation. The Lady Stoneheart arc will probably be canned until it gains more prominence in the sixth novel - that way the show runners can justify bringing Michelle and Catelyn back. So for now dont expect to see her. The omission of Lady Stoneheart ultimately leads to new material for Brienne - though quite what that is nobody knows. Brienne comes upon Lady Stonehearts camp in the novels and later meets a noose because of her. When next she appears she is alive (thankfully) but behaving rather strangely And shes setting up an obvious trap for Jaime. Whatever the case Brienne and Jaime are likely to be reunited. Theirs is a chemistry quite unalike to any other pairing and one which is riveting to watch. So expect Lady Stoneheart to have some sway over the upcoming scenes, or none at all.