The relationship among the players on the battlefield was complex. While Ursa hated the Xyrans from the core of her being, it was the opposite with the Precursors.
The Precursors had treated Ursa and her species with respect. On the other hand, the Xyrans had eliminated them, humiliated her and finally trapped her in a quest for others to claim victory.
It took another Precursor, Ashton, to save her from that hell even though he was a mere tribrid back then. However, she did not know that Ashton's greatest enemy was no other than a Precursor.
She didn't know it yet, but she will soon, and that's when the actual test of her loyalty will begin. But for now, Ursa's enemies were before her, ready to be devoured by the creatures she had formed a great bond with.
