Later, when she was interrogating him, Hilde realized that OZ did not have the colonies' interests at heart, as she had been led to believe. Duo escaped and headed for the moon again. Hilde followed him once more, but his time instead of being bent on capturing him, she was assisting him by fending off the Taurus mobile dolls allowing Duo enough time to break into the moon base.
Duo ended up living with her on L1, as well as managing a salvage yard. But eventually, he answers the call of battle and goes off to fight again.
A few weeks later, Hilde disobeyed Duo's order to stay away from the fighting and stole information from the enemy ship Libra, piloted by Zechs and the rest of White Fang. On it, she met Relena, who was being held captive there. On her way off the ship, mobile dolls attacked her. She fought them off until Duo arrived in Deathscythe Hell and destroyed them.
Hilde is a strong and admirable woman because of her courage and strength in facing opponents stronger than herself and for her dedication to the colonies. She risked losing everything to aid the few people who could bring about the collapse of OZ and the Romefeller Foundation.