>Then what evidence is there that she was a sacrificial lamb?
She was made one, of course, by liberal, western-supported propaganda. Otherwise you wouldn't know anything about her. Just as you have any idea about other journalists killed for different reasons. A famous journalist can be killed by explosion in the middle of the capital in Ukraine, and at best all you got to hear is one or two articles on news feed. That is all. Nobody is going to remember him a year after, not to say, look for perpetrators. Nobody is going to blame government and nationalists. It is because western media doesn't care about people, they only care about useful puppets.
>About whether or not the authorities tolerate crimes or what I said about judging organizations more generally?
Both. If court was unable to decide a responsible party in this case it does not mean that government has something to do with it - after all, a lot of murders remain unsolved everywhere. Of course, if you are typical Russian liberal, a mere idea that the victim was somehow acting against "state", it is enough to convince you that the government is responsible. If government does something, it is bad, because it is responsible, and if the government doesn't do something, it is bad too, because it is irresponsible - that is their modus operandi.