Lorraine Simms is the grandmother of Blake Simms.
Lorraine came to the hospital when Tom Koracick called her to tell her that her grandson, Blake, had been in an accident. After his surgery was completed, Owen and Jackson updated her on his condition. She was told he'd be okay, which Tom reaffirmed for her.
She has raised her grandson, Blake, on her own since his parents died. When Blake got the opportunity to move to Seattle to work under Tom there, Tom paid for Lorraine to relocate there as well, knowing Blake didn't want to go without her.