Hope who was tied up, her hands were tied up, she was hanging, her legs untied, the keys in front of her because the stupid people who tied her up were Damon, Stefan, Elena, Jeremy, Caroline, Bonnie who dropped the keys while rushing to help something upstairs, she simply reached out with her legs then used her toes to take the key, then brought her legs slightly up high then used her toes to unlock the lock on the chains, then landed on her feet. When they came back downstairs, Hope was simply gone and they knew they fucked up, messed up, they were literally the walking dead