Claim her through humiliation

"Glad that we reached an agreement" You move your hand from her palm to the elbow " Let's not waste our time and go straight to the ceremony. Ours ceremony is rather simply, we need to mate before the eyes of the whole tribe so everyone can see that it is consensual" You said the truth, but not the all the truth. It is a traditional wedding, but nowadays, in most cases, it is replaced with a simple kiss. And not in presence of the whole tribe, dozen of witnesses is enough. But with girl acting like that you decided to humiliate her. Besides that's good for your reputation in the tribe to show your ability to tame a woman "Remember, for you being a wife and not a ****, you must show that you are enjoying it. Become actress or learn how to enjoy, whatever, I don't care. Moans of pleasure to be present"

"No. I am not gonna do that!" She pulls her hand away "No! Simply no! I agree to give my body to you, but not to that. I'll better be a **** than act like a cheap whore"

"Then the deal is off" You say in a tone as if you never wanted her " You prefer slavery to marriage? Than you will be a **** when orcs come to your puny tribe. Good pussymeat is always in the high demand on Birumian **** markets"

She returns to her hissing angry tone, that you somehow starting to enjoy "How can I be sure that you will follow your word after all that debauchery you call wedding"

"You can't. I never break my word. But you had no chance to check that. Still you have ****. I think you got information about reinforcements for orcs, and want to strike first. And that impossible. So, either we marry today and I march my army to aid the ones you call sisters or they will face the slavers alone. Your choice, Sheila "