Mercy

You decide to grant her mercy.

Instead of slamming your fist into her cunt as previously intended, you run your hand over her pubic area, slowly down toward her pussy. You slowly insert one finger, Kara gasps. You begin slowly pumping said finger in and out, after a minute or two you add a second finger. You continue this for several minutes until she orgasms. You then dismount Kara and lie down next to her. She says "A little bit of pain really does improve the pleasure. Thank you for not punching my cunt it". You wave your hand and say "Eh, any time". They both laugh for a moment, kiss, then climb back on the couch.