Disclaimer: I do not, nor will I ever or have ever owned Full Metal Alchemist
--- Covered Eyes ---
He has committed many sins. He has killed many men, even woman and children. All for the name of the Amestris Army. All in the name of good will and law. His hands are permanently stained with Ishbal blood and his skin will forever smell of burning ash. Yet, after all of that, she still stands by his side and follows his every command. When asked why she wishes to follow a sinner, she replies...
"I don't see a sinner, sir. I see a man of great ambition."
He takes this answer and accepts it. After all, love is blind.
A/N - She follows him because she loves him and believes in him.