Leia decided she needed more information. "I want to know what I have to do for you to release them." she asks. Jabba replies in Huttese, and Threepio translates. "The amorous Jabba says you must remain with him as his kahnkee for the rest of your days,
or until he grows tired of you. I believe, Your Highness that kahnkee is a Huttese term for a non-Hutt female with whom the Hutt male has intercourse, sometimes including cross-breeding."
Leia's stomach started to turn at the thought of becoming Jabba's lover. But if anything went wrong, and Luke's endgame failed, that would be her fate anyway. Should she say yes, and insure Luke and the others can return to the Rebellion? If the last rumors
she heard were true, the Empire was building a new Death Star. She wouldn't be of much help in a space battle. Yes, she was a good pilot, but ship to ship combat was not her best skill.