"Take off Ella's clothes".
These words from Seth had Iren pausing and turning to state at him, but he paid her no mind, his focus on the big bags he had just pulled out of his space ring.
Considering that Ella had tried to trap him and was probably going to kill him, Irene could think of a couple of things Seth might want to do to Ella, and while she might be against these things, it didn't mean that she was going to stand up for the woman, when she had herself had just temporarily submitted to Seth.
So asking no questions she moved to the unconscious princess and began stripping her, her actions having Minuha twisting and yelling, trying to break free but with the woman's weak physic, she could barely cause much of a disturbance to Irene, though her yells were quite annoying.