We've been so focused on Emily's revenge on behalf of her father, that we completely forgot about the other important parent: her mother! Executive producer Mike Kelley shared some spoilers on how the appearance of her mom will impact Emily.
What we really want to do is find the perfect actor for the role. It would be really great for her to be as formidable as Madeleine [Stowe], but it’s a completely different part. What you’re going to discover about the woman who was Emily’s mother is the circumstances under which they were separated and you’re going to find that there’s some deep psychological issues with her, which I think is going to be fun for us to explore. For Emily, she’s going to start seeing some of the psychological damage that her mother has in herself. So she’s going to start doing a lot of soul-searching about who she is, what part DNA has played in her life choices and how she’s going to move forward, whether or not this person is going to be part of her life or if this is going to be someone that is going to disappoint and hurt her.
Will the appearance of Emily's mom help or hurt Emily in her quest for revenge?
Source: TV Guide