Professor Bernice Summerfield and the Mirror Effect

In 2003, The Mirror Effect was released by Big Finish Productions.

Cover blurb
Do you believe in the mirror or do you believe in yourself? Under the ice on a cold world lie the derelict remains of the lost Grid 4 Mining Station. Inside the station is a mirror, an ancient alien artefact, its existence known to few. Inside the mirror is one Professor Bernice Summerfield, and she can't get out. Trapped and alone in a place she cannot trust, with her friends distorted and turned against her, she is haunted by fears and reflections. And inside Bernice Summerfield is a little baby creature that wants her to be mother.