Yeah. I didn't have my potions with me today in Hogsmeade but Luna, I actually do have something that will help. I could even be able to get it to you tonight. I'll have to go by the hidden room, or you could meet me there.

I'm sorry I didn't think to offer earlier. I was distracted by that stupid The potion that Madam Pomfrey gives for the aftereffects of cruciatus relieves shaking -- and I think it should help you, just based on what's in it and what it does. Do you want to come meet me?