Serenica gave Spade the rope after making him promise he wouldn't hang himself with it.
"Let's make a deal," he said. "If I won't take my own life, neither will you."
Serenica thought this agreement was very good. She hadn't had those nasty, desperate thoughts since coming aboard the Princess. Actually, the thoughts had vanished entirely after the first encounter she had had with piracy. She could never have guessed that Gadfly would have such a huge influence on her. It had all begun from such a small detail, a bad knee, a scarf, some gold.
Serenica still had that scarf. She thought about giving it back to the boatswain, but she had an emotional attachment to it by now. There was way she could part with it.
It was funny that a constant fear of death made one love life so much.