|Family|| Ellie Porter (daughter; deceased)|
Noah Porter-Benson (biological grandson)
Sara Cummings (sister; deceased)
|Last Appearance||"Gone Baby Gone"|
Sheila Porter is the biological grandmother of Noah Porter-Benson and the mother of late Ellie Porter.
While investigating a case, Trevor Langan approached Olivia in her office, telling her that Noah has a grandmother and that she is filing for custody. Olivia, clearly distraught, asks him to leave. Eventually, Sheila comes to Olivia‘s apartment and confirms who she is. At first, the two fight for custody of Noah, but eventually, Sheila visits Olivia at a cafe and the two negotiate for Sheila to introduce herself as his grandmother to Noah. The two later form a friendship and Noah grows close to Sheila. One night, while Olivia is called out for duty instead of calling Lucy, Olivia calls for Sheila to babysit Noah, which makes both Sheila, Olivia and Noah happy.
Relationship with Olivia Benson
Olivia and Sheila's relationship is intense at first, after fighting in court for custody of Noah and Sheila challenging Olivia's parenting skills. However, the two meet at a cafe and both women state they want what's best for Noah. Sheila meets Noah one night and the two women quickly form a friendship, however Olivia still has trust issues. However, they are quickly sorted when Olivia invites Sheila to babysit Noah.
Their new friendship however suddenly changes when Noah is kidnapped. At first, Sheila feigns ignorance, claiming to be as shocked as Olivia is, but it soon becomes clear that Sheila was behind the entire kidnapping plot, and was always intent on keeping Noah all for herself.
This led to Olivia confronting her in the cabin where Sheila and Noah were, culminating in a fight between the two women with Sheila crying that Noah is her baby boy and he's all she has left. Sheila is then arrested and tries to apologize for her crimes, to which Olivia gives no response. As she is being taken away, she takes one last look at Noah and Olivia in distress and rage, finally broken at the combined loss of her attempt at rebuilding her family and her freedom.
After the events of the kidnapping, Olivia suffers PTSD flashbacks of her ordeal with Sheila, as well as getting Noah to safety. Noah also suffers nightmares and has to sleep with his mother, due to the trauma. Barba visits Olivia, who helps her get over Sheila and tells her that she has been through worse. Olivia, however, is now protective of Noah and helps him to get over the trauma that they both went through. Noah still asks Olivia about Sheila frequently, and Olivia replies that Sheila is unwell and in prison.