Valerie didn't like Selner much because of her closeness to Austin. And also how comfortable Austin appeared around her.
However, it was a fact that she was someone who had helped Austin at the time when he was all alone—fighting the gravest battle of his life.
She helped him in both timelines, allowing him to send his soul fragments into different worlds so he could prepare for the war better.
Not to talk about, recently, when she brought Austin to the other side, she was ready to sacrifice her powers and status as a Witch if the Demoness tried to harm Austin.
Valerie might be a jealous fool who doesn't like even those women who ogle at her beloved. However, Selner was an exception. She could tolerate him.
"Quite deep in thought you are," Selner spoke as she led Valerie through some passage that was barely lit.
Valerie could tell that she wasn't inside the Council Headquarters but somewhere else.
