How did the rumor get started that Mary Ambrose the woman who sued the Estate of Robert Palmer was the sister of Christine Ambrose?

I am a friend of Mary Ambrose's brother, Michael. Mary Ambrose was born on June 9, 1977 in San Diego, California. She was raised in San Diego, California as well. I have read articles that state that Mary Ambrose was born in Ohio, but they don't specify the city. I don't know where they might have gotten their information, but it is not correct. In the same articles they state that Mary had five siblings. That information is not correct. Michael is Mary Ambrose's only sibling. Both Mary and Michael were born in San Diego. Their late father was a local weatherman and sometimes disk jockey who moved to San Diego in 1973.