Her mother. That made perfect sense as to why Laurel was feeling the effects of the affliction. It had been passed to her.
Nodding, Diana confirmed the notion that there was another, "I knew your mother very well. Well, technically we still are allies where I am from. Your name made me think of her but until now I wasn't sure if you and she were connected. Now it makes sense."
At the request to help, Diana warmed and nodded again. She lifted her wrists up to show Laurel the bracers she wore, "These can absorb sound waves. I will help you where I can in effort to hone your ability. It won't be easy and I fear we may do some damage, but as long as no one knows what you can do it shall be a task we can achieve." They would be looking forward to late-night trainings.