Lothiriel had gotten up some time before Wedia had confronted Eomer the second time, and got a good dose of things to think about, and when the men had come for the second time. She was going to seek Eomer out and ask if he did have mistresses that he visited when he was out with the Mark.
She moved toward where she thought that Eomer would be, and then heard voices in the war room. She didn't really mean to ease drop, but she had entered before she had realized 'who' he was talking to, and came in right when they were talking about mistresses, and before Eomer had replied to them about such.
Lothiriel ran from the room, hand to her mouth, she headed straight for Eomer's rooms. She wasn't sure why she had come here, as she wasn't sure if she wanted to talk to Eomer, but it was the only place that had popped in her head. So she lay down on the bed, but from all the excitement and upset she ended up getting sick into the nearest chamber pot, crying more, and then falling asleep briefly.