THANK YOU! Also thank you for your lovely rec of this story.
I admit there was part of me that wanted them to get caught too but from the start I imagined a happy ending and I couldn't work out how to give a happy ending with things going that pair shaped. Or we can just use the canon excuse of that Remus's son and someone named James Sirius would get away with everything just like the Marauders did. (And you know Snape's portrait is gnashing his teeth over that! Poor Snape.)