Thea Lorenz

Thea was Manfred Lorenz's daughter. She was the inspiration of Catastrophe Crow.

History
Thea made a drawing of a crow with a bandaged wing. Manfred was inspired to create Catastrophe Crow after seeing it. He wishes for her to see her designs in the game when it releases.

Possible Death
Thea is very likely dead. This is evidenced by a hidden message in the game which reads "Dearest Thea / I am sorry I could not be with you in the end" and "I dreamed of you playing this one day / But you never will". The message is addressed by "Dad". Also, Manfred said "The player is gone" when one of programmers asked him to "Think about player", possibly means that Thea is dead, and Manfred has no point to release game.

Character Symbolism
Mr. Crow is widely believed to represent Thea. She was the creator of his design, and  in Crow Language becomes. Also, a changing family portrait shows a daughter replaced with Mr. Crow.

If this is true, Thea's death injured or killed by falling down stairs, as Mr. Crow does in a video. She was brought home and hooked to hospital equipment before she died.