You had been just as enraged as your father when Rick and his little group came through and massacred some of your people. So, when the lineup came around, this was the first one you felt was truly deserved.
Except you got two good things out of it; revenge and her.
Enid. You'd only seen her a few times around Alexandria, but you felt oddly drawn to her. Maybe, it was the cold look on her face, or the fact she was always alone; but it didn't matter, you were interested.
You spent all your time that day observing her, she must've noticed since you got a stink eye a few times.
When you guys got back to the Sanctuary, your dad seemed especially agitated with Rick. Why? You didn't really know...or care. Until, he instructed you to bring one of the Alexandrians to The Sanctuary, something about tricking Rick or some other bullshit.
You weren't sure if he wanted someone specific, so you opted to just go for Enid. You didn't know if he meant by manipulation or force, so you guessed the latter. Surprisingly, it was easy to get her back there after a blunt hit over the head. You even left Olivia a forged note, posing as the young girl.
When you got back, you felt a little bad about putting her in those dingy cells. She technically wasn't here because she did something bad, so you tied her to a chair in your room as if you were in some crime movie.
When she came to, her face went from confused to agitated when she saw you, trying to get up to attack you only to find out she couldn't. "What the hell? Untie me, now!" She demanded.