You have no idea what she is. What do you think drove Hammond and Lockwood apart? Lockwood never had a grandchild. He just wanted his daughter back and he had the technology. He created another. He made her again.
Eli Mills was Benjamin Lockwood's closest advisor and operated most of his business interests. He was young and ambitious for his role and Lockwood considers him his right- hand man. Like Iris Carroll he is considered more like family than a member of staff.