She looks at Erica, "Well, here, let me tell you something: if you were to look at me, you would see the result of this: Stopping whatever it is. I only just found out about you facing the same condition, and I need you to do something, so I figured it would be a fair trade. You and your friends do something, I give you the cure."
She looks at Charlie, "Erica's life for a little fetch quest, I see nothing unfair with that."
OoC: I'm currently trying to get everyone started on my plot. They just need to accept what Dawn's offering, then she can get them going.