I'd like to start just before the capture point, and go through the bringing back process, and then after she gets broken and the love period. How 'broken down' she gets is up to whoever ends up playing the male part. It could end up as an equal partnership love affair, or he could prove dominant and bring her down to nothing more than a medieval style house wife.
Vala would have a pretty neutral reputation. Those she does deeds for like her since she gets them what they want. Most don't really care that she can summon creatures to help her in her work. Of course she would have pissed a couple of people off as her demons walked through their farms and such but otherwise no she isn't hated. As for what makes her tick, well that's up in the air right now, it will come as the RP plays out.