I'm just going to vent at this point.
The canon ending for Call of Duty Black Ops - Cold War is where Bell and Adler are in Greenland, on a cliff after their "Nuke" mission, stopping Perseus from detonating the American nukes that were about to wipe out half of Europe. Adler had to shoot Bell, since she was pretty much useless after the mission, and Adler couldn't trust her enough since she still technically worked with Perseus.
(or smth like that idfk)