[quote]Maybe because it's a symbol of war and destruction that abandoned her and Chief when they need help the most.[/quote] I don't think so. I mean, it was vital in getting them inside the Didacts ship. [quote]That or she knows it's the single biggest threat to her uncontested rule.[/quote] This seems a bit more likely but still doesn't make the most sense. It's just one ship, and isn't even that über powerful especially when put against machines such as Guardians.