hmm then its strange,
i had 2 girls (one with incorporeal and one construct) going into the catacombs twice per turn for about 15 turns yesterday
the incorporeal girl had this trait through an item, the construct lost less fights than the other one, now that i think about it
i stopped using girls for catacombs after so many lost fights
but i think i'll try again and check whats in the gamelog about it
maybe its something with the using of items, not with the catacombs
Edit:
According to the gamelog it's just one of the catacomb foes is incorporeal and with both incorporeal it's a draw
and this counts as raped by monsters.
Also the construct girl only loses against incorporeal foes, and beats everything else.
I didn't know foes in the catacombs could be incorporeal, it explains it.
I could live with a slightly reduced chance of meeting incorporeal foes in the catacombs
but as long as i understand whats happening, i'm happy.
(Maybe i should look in the gamelog more often.)
I will set it back to draw is neither win or loss for the next version.
I think there should be some changes to the incorporeal trait somewhere in the future, but as it is now, its always a problem
either a girl with it has never problems (because she can't be hurt by anything)
or if the incorporeal character is a foe, you always lose.
Maybe it should be only hit by magic attacks, that would give you a chance to beat an incorporeal foe in the catacombs
if your girl is strong in magic
and at least a small risk for your girls if they meet a strong magic foe
But i think something like that needs a bit more programming.