Whilst Nyree was quick to pick up a lasgun alongside most of her fellow prisoners, there were some who were not as keen to grab a weapon. The choice of when to die was being twisted a philosophical and spiritual argument, yet it was debate Nyree thought was pointless. Everyone in the room was likely loyal to the Emperor in one form or another, yet why would the Inquisition kidnap and torture a group of random guardsmen that had done nothing but serve with honor on the Imperium's battlefields?
Nothing was as black and white as some of the guardsmen in the room tried to put it. For all Nyree knew, she had went from recovering from a near-death experience with a plasma gun to receiving unspecified orders to being tortured. Nyree struggled to fathom as to what might've gained the ire of the Inquisition, being her last posting was putting down a heretical revolt that was supposedly a bane of the Imperium! By the throne, what did a loyal servant like Nyree could have done to warrant being kidnapped and battered repeatedly outside following direct orders?
Still, regardless of how anyone viewed the situation, their supposed rescuers knew they had to convince the remaining few to stand up and fight. Carefully peeling the stormtrooper's mask off, the Major allowed the guardsmen to see a disgusting sight--a sight Nyree knew well. She had seen deformities of Chaos on the battlefield, and the stormtrooper's appearance only gave evidence to the conclusion something was clearly not right according to what Nyree and some of the guardsmen had believed.
Then, as if to give further evidence to take up arms against the now-confirmed inquisitorial traitors, the Major pulled forth a charm in the shape of the Ultramarines insignia from within his uniform. If the supposed shadow order had the full backing of a Primarch, even more so Roboute Guilliman himself, what was there to do other than to fight? Clutching the lasgun in her hands and double checking the settings, Nyree headed out to fight alongside the rest of the guardsmen to do what they did best: dying standing in the name of the Emperor.