Talk:Sylvia Anna/@comment-80.101.158.160-20160607185042/@comment-27033570-20160611051717

A grand (or great) niece is the granddaughter of one's brother or sister. Reference: http://www.merriam-webster.com/dictionary/grandniece

And thanks for updating the article, Rhadagast. We can update it again should new information come out, but from what we know, they're cousins and not aunt and niece.