Well the checks work similarly if passed.
Viewing post in Convincing Princess Help
Was going to leave this thread at that, but just noticed something odd. Whilst was trying to get this sorted, been playing through on my other character that I was playing for different class build. Made all the same choices throughout game, got to same point, yet despite this characters factors all being exactly 4 with exception of physics 5, so much lower ones than original character, managed to succeed at charm.
No differences in choices made, so not quite sure what's going on. There's an issue somewhere, but I don't know if it's in the game code or just a one-off bug somewhere in my original run.
Not really an issue now that I've managed to convince her, but figured it'd be worth mentioning just in case there is something off.