Re: fear of failure
Thanks for pointing that out! I hadn't thought of it in exactly those terms, but I think you're absolutely right. As 00sevvie said, that could be a whole essay subject on its own.
While reading the last two books, I kept hoping that Dumbledore had left behind some kind of provision to posthumously exonerate Snape, but there doesn't seem to be any evidence of that, unless his portrait would have told the truth after Voldemort was safely defeated, and again, as 00sevvie says, it seems questionable that a portrait's testimony would be accepted by the Ministry.
While reading the last two books, I kept hoping that Dumbledore had left behind some kind of provision to posthumously exonerate Snape, but there doesn't seem to be any evidence of that, unless his portrait would have told the truth after Voldemort was safely defeated, and again, as 00sevvie says, it seems questionable that a portrait's testimony would be accepted by the Ministry.