You knew you were beat. You were at her mercy, and your only way out was some kind of deal. "Yes, we can."
She beamed to your response. "Excellent! First, let's get you de-paralyzed. In order for that, I'll need you to agree to a Soul Contract."
You couldn't show a puzzled look due to the magic. "A what?"
"It's a link between a caster and a...Colleague. It makes sure if the colleague attempts to betray the words of the contract, they die. In your case, it'll be to ensure you never seek to do harm to me, my property, and those near me, as well as to stay nearby until your punishment is both doled out and your debt is paid. Once I know you can't harm me or run, I can release the hold on you."
You sighed. Those were your top two plans to get away without punishment if she released you. "Alright, I'll do it."
The contract itself took well over 5 minutes of her chanting and repeating phrases into some kind of spell circle written on a piece of parchment, until it began to glow with magic. Throughout, she included the rules she had spoken about, but changed the wording in many ways. Once she was done, the parchment was moved to your left claw.
"Now dear, please state 'I agree to this Soul Contract.'"
"I agree to this Soul Contract." As you finished the last word, an immense burning feeling grew from your claw tip. Blood had managed to pull itself out of your body to write your name on the dotted line. Furthermore, an eerie feeling of dread washed over your body, like there was a guillotine hanging above your head and you weren't sure when it was going to drop.
"Excellent. Now as a reminder, intending to harm me will result in your death. That includes thinking about it, so don't weigh the option after I release you like so many thieves tend to do. Release Hold." You could feel the She took up the paper. "Let's see. Your name is...Robert Pattinson? Never heard of a pattin, but this can't be the first time you've had a run-in with a spellcaster, unless your adoptive human parents had a poor sense of humor."
You decide to change the subject. "What is my punishment?"
The elderly woman gave a wry smile. "Bad past it is, then. Follow me, we'll walk and talk." She began to move toward one of the smaller huts toward the forest's edge. "Honestly, I really needed that cow. You've been fairly controlled and honest, so I'd feel bad if I made you into a cow. How about a compromise? You make me enough to afford a new cow, and you'll be free to go. Will you agree to that?"