Whose side is Amanda on anyway? Could it be Bladestar? Neither Team Xen nor the Stormchasers seem to want Melia dead as of now, and Amanda apparently disappeared from GDC one day only to turn up much later without explanation (as a npc in the Residential District recalls). Maybe abducted and conscripted? Actually, Rune disappeared out of the blue just like that, now that I think about it, and she just so happens to be Flora's oldest friend. Speculations aside, Amanda knew about the bomb at the very least.