She hated me in the beginning, couldn't stand me, hell I didn't like her any better honestly, wanted to add her to the list of Slayers I'd bagged and tagged in the last century, but I made myself an asset and she couldn't really bring herself to kill me either. And there was this situation at one point, which I suppose I should explain for the rest of this to make sense...
In a nutshell, some government organization took me and implanted a chip in my head to keep me from harming humans. Things changed after that....
The chip, I thought it was the reason for those changes, chose to believe that was all it was for the longest. But in the end, when the chip malfunctioned and stopped working... I realized it wasn't the chip at all. It was her, and more than that, my love for her. She made me want to be a better person. And eventually? That made me try. I had to try, to be a better person, the sort she deserved, just...so even if it didn't work in the end, I would know I'd given it everything I've got, there was no other option, nothing else I could have done to make it turn out differently.
People will probably tell you that redemption can't happen solely for one person, and...I agree with that. But it can start because of one person.