I cut Erin out of a future drabble, with the advent of the three-episode arc. So I've put her in here, which back-stories a scene in 'Some Kind of Miracle.' The last line still bothers me, but...
Lightning
When she first felt it, Erin described it as being struck by lightning, and not in a good-idea, Eureka! kind of way.
That sudden realization, that shock, knowing that someone is dying, knowing she's not in control, there is nothing she can do.
It hits Addison like lightning, too, and luckily, Erin is there to catch her.
Erin pushes her up against a wall and cradles her head in her hands, whispering lowly, whispering fiercely.
"Addison. Addison, Addison Forbes Montgomery, you listen to me. Listen. You do not get to break down, you do not get to fall apart, do you hear me? You do not get to do that, because there is still a chance, dammit, and you do not get to give up when there's still a chance."
She doesn't remember what happens after that, only the words.
Ten years later, it hits her, electricity searing through her heart, that the words are all she has left to send Derek to Meredith.
Reference: Eureka! is what Archimedes was all about when he discovered the concept of displaced mass (or volume. I think it's mass). According to legend, he yelled "Eureka!" when the idea struck him in the tub, and he ran, stark naked, to tell the king all about it. The Greeks were very proud of him.