"I'll keep this short because I know you all want to eat.

[Sister's name]—you've always been the strongest person I know, on the wall and off. Elliot, you're the one person who keeps up with her, and who she trusts completely. You met doing what you love, and somewhere along the way it became this. I'm so glad it did.

To [Sister's name] and Elliot."

*(~40 seconds spoken. Swap in her name; if you want, I can make it even shorter or add one personal line.)*