You (female) can find Tybalt's treasure, you tell her

"My name is Rowan," you say, "and I am the descendant of the pirate Tybalt James. I can find his treasure."

"Why should I believe you?" Captain Fox asks.

You pull a pendant out of your blouse, and show her your family crest, and start talking. "When my great-grandfather wrecked his ship, he killed his entire crew to keep the location a secret. He took with him only as much as he could carry, and left the rest somewhere safe. He told no one how he got home, because that would have given away where the treasure was.

"The riches he brought back were enough to leave him, and his descendants rich. However, my father gambled most of his inheritance away. When I was growing up, Tybalt told stories that I believe will lead to the location of the treasure. I need to find it, or I will have no money of my own to build a life on."

"You have my interest," she says. "Come with me, you've bought yourself a night. However, if you are lying, it means your life."