@thefiller
TL;DR- Yeah its possible, extremely psychologically unhealthy, but possible.
Long version:
Eh, that phrasing may be misleading but in theory yeah. Stockholm Syndrome is a thing, so being able to love/sympathize with your abuser is already been proven to happen in some cases. As for "enjoying" the rape, I could also see it as a possible coping mechanism after prolonged abuse. Though I'm not sure if "enjoyment" would be the word, rather I'd choose "acceptance". But generally, the whole ahego "I love being raped omg" is very much a hentai/porn plot. Trauma does a lot of wacky things to the brain though so I wouldn't necessarily call it impossible after prolonged abuse, especially in a hopeless situation such as this, but probably not likely and not as dramatic as this. Head wife does have a point, if you have completely given up hope on escaping, being the king's fuck toy would certainly be better than being the general public's fuck toy.
Ultimately though, it is an incredibly unhealthy coping mechanism that would likely be reverted to at last resort after being psychologically damaged to a certain degree. I can only speak for myself as a victim of childhood sexual abuse, but I know for many years I tried to "normalize" what had happened as a form of coping with the reality (and that's actually very common among survivors who do not immediately seek proper mental health care.) All these kids gonna need extreme therapy if they make it outta this alive.