From Facebook:
More details of Steph Scully's return storyline have been revealed by show bosses.
Steph (Carla Bonner) returns to Ramsay Street after its revealed that Sheila Canning and Lyn Scully's babies were switched at birth and that Steph is Sheila's real daughter and not Naomi as always thought.
Naomi (Morgana O'Reilly) and Steph then argue as Naomi struggles to deal with the situation, and as a result, Naomi leaves Erinsborough to visit Lyn and get to know her long-lost family while Steph stays in town and gets to know Sheila (Colette Mann).
Naomi eventually returns after a few months away, but its clear that her life has changed forever as she struggles to get back into her old life...
Surely not, I don´t believe this for one moment