Well, what you’re describing sodnus like the beginning of a domestic discipline relationship. This is a situation in which one member of a relationship (regardless of genders) submits to the other’s authority to punish them for wrongdoing. This is something that should be discussed and agreed upon between the two of you long before any punishment actually takes place. Also, being disciplined as an independent adult is something that only a small percentage of the population is wired for. If she’s not wired for it, then it’s not going to happen, and would be abuse if you still tried to go through with it.If her behavior is getting out of hand, and hurting herself as much as others, then you should probably address the issue of her behavior, first, including the discussion of spanking her at the end. If you present punishment as a loving incentive to help her to get her act straightened up, then it just might appeal to her need to correct her mistakes and be a better person.Now, if her behavior is simply aggravating you, and not really harming herself or others, then there might not really be anything to punish. Being able to discipline someone for simply annoying you, rather than actual misbehavior, is more of a Dominance/submission mechanic, and doesn’t directly apply to domestic discipline.I didn’t respond to this question from the standpoint of sexual fantasies, because that doesn’t seem to be what you’re hinting at. If you are, then simply give her a couple smacks in the heat of the moment and see what happens. The bottom is an erogenous zone, and few girls will object to light swats during sexual play. It’s actually more likely to turn them on than off.