Thanks for the detailed response!
I think this is a great illustration of the privacy (and thus related legal) issues that simply aren't being addressed in the research and commercialization efforts thus far. We saw a little of this with Instagram's photomap, that people's locations were being "outed" because they were tagged in someone else's photo and that person chose to make their locations public, but it's going to get more complicated before it makes more sense.
But I don't feel like I have some kind of right to know anything beyond what she chose to tell and I hope my kids will have the good grace to look at me in a similar way. By the looks of it that won't be a problem.
It's one thing to be interested about ones forebears, another to be obsessed by it. When my mom went all out on some genealogy site and put all of my details in there as well as those of my spouse, kids and so on we asked her to please stop doing that.
Besides the obvious privacy angles I don't think kids that can't stand up for their rights should be included in the documentation that others place online, by the same token my kids and their descendants don't have an automatic right to any level of detail about me.
I remember that one of the dictators (Kim Yong-Il iirc) of NK had a film crew following him making a documentary about his life. The guy was batshit insane, and I feel that anybody that wants to document their live to that extent has an overgrown feeling of self importance.