The Choice
Blue, Green and Red. Control, Synthesis and Destroy. Death, Death and more Death. Well, according to that creepy, glowing child who claimed to be the Catalyst? Obviously, Control and Synthesis would kill her. Destroy had the potential as well.
Shepard was ready to die. She had prepared herself since the day she joined the military. Every soldier should. But she'd been given an order, an order from the man she loved. She couldn't disobey an order. She never disobeyed orders.
Her one goal since the Reapers arrived was to destroy them. She didn't want to complete what the Illusive Man wanted, by controlling them. Synthesis had its promises, but having the Reapers turn 'friendly' felt…wrong after everything they had caused.
So that left Shepard with one option: Destroy. Destroying all the synthetics – EDI and the geth – was a huge compromise, but in the end, she'd figured they would have understood. A necessary sacrifice to save the galaxy.
"I'm sorry" Shepard whispered to herself before firing her pistol at the panel that would trigger 'Destroy'.