The person who uploaded Dorothy's profile is no longer active and her profile has no manager. Her family tree is
http://www.wikitree.com/genealogy/Gjetley-Family-Tree-12 and shows the framework of where you would be if you joined WikiTree. You could adopt her profile, her parent's profiles, and several of her maternal ancestor's profiles. You could then add your father and correct any other errors or omissions. It would be great if you were willing to volunteer to help grow WikiTree.