As far as I understand, if you have a choice in the dialogue, you can opt to influence its outcome by Speech (presumably crafty argument), charisma (something like charm) or strength, which appears to equal intimidation. You often get to see the interlocutor‘s skill.
Now, with intimidation it is not completely unreasonable that an intimidating knight should be harder to intimidate. But why should a charming woman be particularly immune my charms? Perhaps men try to charm her a lot, so she levels skill, but my charm seems to work quite well on Lady Stephanie. Hence my question:
How does the interlocutor‘s skill - not Henry‘s - affect dialogue outcome or difficulty? Is it simply so that charming people are harder to charm, strong people harder to intimidate, eloquent people harder to win over by argument? Is there an influence of sex?