It's definitely something they could have and should have done in the X-men ongoing prior to the most recent Hellfire Gala but right now during Fall of X they only once interacting with her family are Scott's interrogators, Elixir hopelessly fanning over Jean and Cable is off on his own entirely.
Rachel has better role in this event then any of them. Anyone with a better role then Rachel right now is a candidate for being the eventual X-traitor.