Cordelia Delgado

Cordelia Delgado is a major antagonist in The Dark Tower series by Stephen King. She is one of the main antagonists of Wizard and Glass, as well as its graphic novel adaptation, Gunslinger Born (though she plays a smaller role in the graphic novel).

History
Cordelia was the sister to Pat Delgado and the aunt to Susan Delgado. When Pat was killed, it was Cordelia's job to raise Susan. However, Cordelia never really liked Susan, and was jealous and insecure about Susan's youth. It is implied that Cordelia may have known the truth about Pat's death.

Cordelia didn't have a source of income after Pat died. She made a deal with Mayor Thorin for Susan to be his "gilly" or concubine, in order to bear his children, and she would get money in exchange.

As time went on, she became more obsessive and more insecure, and her hatred of Susan grew. She ignored Susan's complaints that the Mayor sexually assaulted her.

Eventually, Rhea of the Coos discovered that Susan was sleeping with Roland. Rhea told Cordelia this. She then allowed Rhea to drink her blood in exchange for Susan's death. The two of then brought Susan to be burned alive at the Reap Day festival.

After Susan died, Cordelia dropped dead. The cause of her death is unknown. Many assumed that she died of a stroke. However, Roland thought that at the last moment she realized the enormity of what she had done.