"Dobby can be giving this potion."
"Okay, but how will you know when he's bit? I've tried to create an array to sense and trigger at the right conditions, but it's not working, and-"
"-It's okay, miss, Dobby will be knowing."
"Right. But how?"
A head tilt. "Dobby is being a good Elf, and good Elves always be watching!"
"Right. Sorry. It's just, I might not be here..."
"You can count on Dobby to be helping, miss. As long as Dobby is able."
"...Dobby, if I got you a chainmaille shirt, would you wear it?"