He didn't need to wait very long. Soon after the chance was over, he was painfully pulled out and down back to his origin. The de-possession was complete and Elizabeth's body went limp, her head hung down. She was breathing, though, so obviously she was still alive. 

She just felt so tired. 

She had started tired to begin with, then had to intensely fight with herself and a will greater than her own, and then went through a de-possession. 

She was more than tired. She was exhausted, both physically and mentally. She wanted to sleep, to rest...