Valdis looks away, despite her breakup with Erin, she still loved her and she still misses her.

"I did once, but I do not seek a pact with you, I would prefer if you made the decisions on your own and not because some sort of harm or consequence would come to you if you failed. Yes, I can sense when someone is being honest with me, or when they are lying, or if they are hiding something. So, if you tell me now that you will do your best to stay out of trouble, and you speak it truthfully, that is all I ask."

Not even a promise to not get into trouble, just one to do her best. Trouble likes to find people here, she's not going to punish someone for having bad luck.