My concern with all of this is as follows: I suspect that the parole board bases their decision on only one question: "Is this someone who was associated with Charles Manson, and tied to those crimes?" I imagine that there is a fair bit of "not on my watch" and "I'm not going to be tied to releasing one of the Manson family" thinking going on. And I think that all of the usual criteria for evaluation whether someone is eligible for parole get thrown out the window, because this person, who was basically a damaged child when all of this happened, has never denied her involvement.
I am not saying that any of the things she did were defensible, but, so many decades ago, she was damaged. Anyone who has read anything about this case knows that. She has spent more than 4 decades trying to better herself and be a model member of her 'community' of convicts.
There are thousands of people who are greater risks to the public and to their friends and families (e.g., those involved in domestic abuse) who are paroled every day, and I don't see any threads about them here.
Perhaps she is still dangerous; perhaps not. But either way, I do not think that she gets a fair shake from the justice system. And I think that even considering the crimes with which she is associated, she is somewhat a victim herself. To deny this would mean one is totally ignorant of what went on with Manson and his 'family'. But it's a free country, so it's your right to believe or ignore whatever you wish.