Your New Best Friend

You walk closer to the hanging bodies and find that two of them are unconscious, but one of them, a girl a bit older than you, is breathing heavily and seems to be trying to make some noise.

You ask her gently, "who are you?"
She mumbles back, "I'm... Claire's... sister." She seems to struggle with every word.
"Is there any way I can help you?" you ask her.
"It's... too late... for me. She has us locked up... with chains, but I can tell you how to get out," the girl seems to regain some of her strength to talk more.
"Are you sure we can't escape together?" you ask while pulling at the chains around her legs.
"No the chains are all locked, just get yourself out and then come back for me," the girl seems to be hurrying you along.

You give up trying to help her and listen to her explain how to escape.