
But I feel more like this is real canon, even if the books don’t state it. Harry is too forgiving, but I don’t know how anyone finds that much empathy for someone who had such a direct role in his parents’ deaths without having been in their shoes and partially to blame for causing the death of someone they’d have done anything to protect. Harry’s guilt over Sirius helped him relate to Snape.

It is especially seen by mentioning Marauders and Harry having an insight in their time spent in Hogwarts. The point is; LIFE changes people; it is how these young people full of life and joy become damaged adults, it is about their loss and demons they are fighting. It shows that life doesn’t spare anyone and nobody knows what is ahead of him. Jo wanted to show that change, how certain events happen and effect people, leaving them destructed and damaged. In my opinion, that is the point of characters as Sirius and Lupin. Nobody is spared and everybody are living with their burdens.

And the last look of Sirius to Harry was heartbreaking. I often relate this scene to the fact that most of us think that our parents/relatives will never leave us. That they are immortal. And the expression in Harry’s face I can see how this fact is destroyed, you can see all his hopes leaving him.
Well none of this is accurate obviously as we can only speculate but logically it would make no sense for Peter to have gotten the dark mark while spying for voldemort. It would’ve been a dead give away and very easily noticed. So I would go with that being the reason no one saw it. Because he didn’t have one.
and that is more than likely the reasoning they would tell themselves about sirius not having one. Because he was a spy and that would’ve been too obvious.
As for going to prison tho, the entire event unhinged him. Made him a little mental, part of him never denied that he killed Lily and James because he believed he had. It was his fault, in that frame of mind, that he’d gotten them to switch secret keepers (something that he thought would protect them further) which is what ultimately got them killed.
He didn’t fight it, he went to azkaban immediately (laughing hysterically mind you) without trial and without hope because the only people who knew anything about them switching secret keepers were dead or pretending to be. All evidence pointed at him.
But then the Black temper played a part once he was there, anger at Peter for what he’d done cut through the rest eventually and gave him the strength to keep his mind all those years, the hope to one day avenge his best friends death and the drive to break out and try.
AT LEAST THATS HOW I LIKE TO THINK IT WENT DOWN. Maybe we’ll get more insight to it when they finish PoA on Pottermore =D

I decided that I would not cry when Sirius died as I had in the book and the other times I’d seen the movie. I failed, and she got quite angry at me. It left me feeling bitter for the next couple days until I confronted her, and we worked it out. Now she better understands my emotions.