In Warband, a lady can be asked to talk about herself and her relationship to her lord. The player can also marry ladies who are not already married, can dedicate a tournament to a lady, and can proclaim love to them. Poems can be learned to woo them.
A lady can also improve your relationship with a lord of that faction, at the price of one thousand denars per relationship point.
Ladies can offer a quest in which you must defend the honor of the lady and defeat the lord that sullied her name. You must visit that lord and challenge him to a one-on-one duel in the tournament area. If you win, you'll lose a lot of relationship points with the lord and gain a lot with the lady, who also gives you a reward (usually 3000 denars) whether you are victorious or not. You will also gain a point of honor if you accept the reward, two points if you refuse it; you will lose five points if the lord defeats you in the duel.