Marie writes...
I would never dream of changing my Anne. But, to suit the hypothetical... I wouldn't mind if Anne had a higher level of predation. It's just... she's a fragile girl. I want to be sure she'll be safe without me hovering over her all the time.
I can also answer your second question. Their preferred prey is simple enough: Anne. I traded their souls to experiment with the Well, so they're naturally drawn to me and Anne. They'd want me too, but...
...these curves didn't come from nowhere~
Apart from that, preferences vary from person to person. I prefer meals in their 20s-30s, willing, squirmy but not rough. No gender preference. If I eat someone to digest them, I will make absolutely sure they want it too. Unless they're... a problem.