The president and Dick Cheney should have a wide zone of privacy when it comes to their families. Their daughters didn't ask to enter the political echo chamber, and so they shouldn't be forced to live in it. (Though, the Bush twins did speak at the 2004 Republican convention, and a Cheney daughter worked at the State Department.)
Allow me to suggest that the Bush twins weren't forced to speak at the Republican convention against their will. And that Liz Cheney probably had some "help" getting the job that she "asked for" at the "State Department". And that, on top of everything, Mary Cheney has worked publicly on behalf of her father, who heads what some might call an atypical family (vice-president and whatnot). Why on earth should these people be given a wide birth of privacy when they know full well that, when they can take that privacy for granted, they will use it however they can to do no good.