Was Alexandra the daughter of Queen Victoria?

Queen Victoria had 9 Children, 5 of them Daughters Victoria, Alice, Helena, Louise and Beatrice.

It was her Eldest Son and Heir Edward who married The Princess Alexandra of Denmark making Alexandra the Daughter in Law of Victoria.

Queen Victorias Great Great Grandaughter is also Called Princess Alexandra of Kent, which you may be refering to as Queen Victoria also held the Title Princess of Kent, as Both are Daughters, of Younger Sons of Kings and Both held the Title of Duke of Kent.

She also had a granddaughter who became Tsarina Alexandra, but her name at birth was Alix.