It's important to do this rather than trying to make the profile disappear because as you say, it's all over the internet, so other people believe she exists and this is where they will find the truth, especially if it's well documented.
Also note, that only real people have parents, spouses and children.
If the legend that has grown up around her includes mention of children who are real people, they can be named and linked in the narrative, but they should not be linked as children in the data field. We don't want real people having fake parents!