While it is an excellent story, it is not epilogue-compliant. (Not that that's bad IMHO, just that it's a misleading advertisement.) To be epilogue-compliant Lily must live to be at least 9, when she's on the platform for James and Albus leaving for Hogwarts.
Right you are I guess. Sorry for misleading as I hadn't actually thought of it that way but rather as it being a H/W ship and they had children. ~EJ