PDs jump in for unrepresented folks all the time for purposes of arraignment. In a death penalty case in KY, I would also feel confidence in the DPA's PDs who handle those cases. Even among attorneys who practice criminal full time, death penalty cases are relatively rare. The Commonwealth hasn't announced (to my knowledge) in this case if they'll go for it, but I wouldn't be shocked. And yes - public defenders are assigned based on means by design. They are a limited resource and if you have income/assets, you shouldn't be taking that resource from people who would otherwise be totally unable to navigate a criminal case. Pro se parties are just...no. Attorneys suck, until you need one.
Re: vigilantism. I understand the impulse, entirely. But it's just not a good solution. It doesn't undo the wrong that was done to the victim. It's a temporary, visceral satisfaction that does not help the person who was wronged, not really. Whoever carries out the vigilantism for the victim is signing up for isolation from that victim, who is presumably a loved one, for the better part of the rest of their lives. The victim (or their family, if it's a murder) then loses something else, and the pain is just compounded. The American justice system is far from perfect, and I understand why people get disillusioned with it; but it's also the best in the world. At some level, people have to understand a few truths: a) some people are evil; b) all humans are fallible; and c) you cannot turn back the clock to undo the actions of an evil person. Fallible humans will make mistakes, and yes, sometimes that means an evildoer "gets off easy." But that is legitimately not a common occurrence and if you can't see the meaning behind "better nine guilty men walk free than one innocent man be convicted," I don't know what to tell you.
None of us know what was happening with Mullins and Stines, and honestly....we might never know. Regardless, if the rumors about the judge and the sheriff's daughter are false, I can't imagine how much additional pain the families are going through now having those rumors perpetuated nationwide. It's not just the judge's reputation - those rumors will follow that girl the rest of her life. If she was truly a victim, how horrible for the world to know if you didn't want them to know. And if she wasn't, holy hell, how terrible to have that cloud of suspicion follow you forever.