Sinclair is a nurse who appears in Alan Wake.
She is one of the nurses at Cauldron Lake Lodge. During the storm Tor Anderson hits her in the head with a hammer, knocking her out. It's unknown what happened to her, but likely she was either killed by Taken or possessed by the Dark Presence.
- She's a control freak; she likes seeing the patients bend to her will and for some of the shady things Emil Hartman tells her to do, her excuse is "she's only following orders".