An intense punishment.

"How did that song go, again? Clips on your nipples, whipping your flesh..." The bard began to squirm on the ground, as though she would try to wriggle away. "Can't disappoint the songwriters, now, can I?" Bringing your hand up, you conjure the Lust Whip once again and lay into her.

The first crack goes across her ass, the second mirroring it on the other cheek. Both elicit a moan filled with far more pleasure than pain. You spend an easy five minutes alternating between sides, beating her plump, delicious ass raw. With one final snap she lets out a scream and her body begins to convulse. A stream of juice squirts out from between her legs, forceful enough to dig a small hole into the soil beneath.

"Aw, did my little masochistic pig cum? But we're only getting started.

"Wait! My HP-!" she cries in alarm. You pause mid-strike and glance at her remaining health. She's about two slivers away from despawning.

"Oh, good point. We wouldn't want to let this end early, would we?"

You flip the bard over and bend down to suckle on her breasts. You give her stiff nipple a firm nibble, then begin using your new succubus powers to transfer a portion of your life into her. You glance up after a few seconds to see the effect it's having.

Her HP bar barely moved.

You stop the transfer and gawk. That was a quarter of your HP and she hasn't even doubled her remainder. "The heav'n?" you ask aloud. Was it not working, or was her level just that high?

"If you'll let me..." the woman tries to offer. You snap your head to meet her eyes. "I have potions in my inventory."

That would mean freeing her. At least one hand, though with how the whip is entangled you'll have to undo all of it. You're fairly sure you can beat her again if she does try anything. Or you could keep her tied up and just stop the whipping.