How does she escape in Gerald’s Game?

How does she escape in Gerald’s Game? Jessie miraculously pulls a hand out of a cuff and breaks free. She gloats to Gerald, but then turns around and tells herself, the one still trapped, that it is easy to escape. Gerald and the self-assured Jessie tell things about herself and Gerald that she never had the courage to acknowledge.

Jessie miraculously pulls a hand out of a cuff and breaks free. She gloats to Gerald, but then turns around and tells herself, the one still trapped, that it is easy to escape. Gerald and the self-assured Jessie tell things about herself and Gerald that she never had the courage to acknowledge.