The genetic counsellor at Dr. Davis’s office. Stephanie helps guide Alice and John through the process of having Alice genetically tested to see if her Alzheimer’s has a genetic link. Later, after Stephanie tells Alice that she does have a mutated gene that inevitably results in Alzheimer’s and that may have been passed on to her children, Stephanie sees both Tom and Anna to give them the same test, which reveals that Anna also has the gene mutation.