Love how the movie frames Stratt’s office like a prison cell when Grace makes a run for it. She’s standing there knowing that out of all the difficult choices she’s had to make, this will be the one that she will carry the guilt of for the rest of her life. The camera centers Stratt in the center of the frame with the camera situated at the entrance, making the space that she’s in feel small.
The blinds along the window are framed like the bars to a cell, it’s through them that she watches Grace run past in his escape attempt. This is reinforced in the next shot where she looks out through them.
Her resigned expression tells us that she is upset that she had to do this but does not regret it. Her position and responsibility placed her in that office, forcing her to make the decision she made. She is never shown leaving this office, because she will not be free from the guilt that comes with it until she knows the project is a success. She prepares to serve her life sentence.