As Mapp and Serena battled it out in the Citadel of the Time Lords, buried deep under the shattered crust of Gallifrey, Susanne followed P90 towards the Temple of Time and witnessed the battle commencing. After watching the two Time Lords fight, she decided to act on a sudden instinct and throw herself between them both (much to P90's distress). As she does this, she is killed instantly by the sword of the Chosen (originally wielded by Mapp) and everything then blinks out of existence.