Crap, NA! I'm so sorry about Lyra! Poor kitty girl.
It's awfully hard to leave them there, even when you know it's to help them get better, isn't it? I spoil the bejesus out of our animals when they've been to the vets- they get so scared and they just don't understand what's going on. Please give Jack and Lyra really big hugs from us, and hugs to you and Chris too!