User blog comment:Eobard95/Is Dinah Drake the grandmother of Laurel and Sara?/@comment-26537965-20170307134145/@comment-26624146-20170307140121

True but her name is Dinah Drake and as stated above the comics Dinah Drake is Laurel's mother and she does have a mother named Dinah in the series. If this is an oversight it's a hell of a big one.