She's Not Well (The Artful Dodger) [TBS]

A girl suddenly starts to appear in the hospital, she never says a word but seems to enjoy Jack's company.
It's soon revealed she is the Prof's grandaughter and he is keeping her locked downstairs in the hospital morgue supposedly for her safety and the safety of everyone in Port Victory.
After a long debate with the professor, Jack makes it his mission to help Y/n and try and help her but the professor doesn't trust him completely and also allows her old doctor from the asylum to visit weekly to upkeep her treatment.