Susan Lyle (Anime Series)

Susan Lyle is a character from Supernatural The Animation.

Overview
Susan's husband and son died in an accident. Some time after, she met John Winchester and helped him take care of his children. Susan grows exceptionally fond of Sam, due to the similarities between him and her late son, since they would have been about the same age.

Dean is reluctant to accept her, while Sam grows increasingly fond in return. John also finds her presence a necessary comfort for his sons.

However, after a hunter attacks their home and tries to hurt Sam, Susan decides to kidnap Sam and take him to a scrapyard, where she expresses her wish to be with him however. It is then revealed that Susan had made a deal with Azazel in exchange for the return of her family.

When the scrapyard comes to life, Susan ultimately decides to sacrifice her life to save the boys.