Aye aye, Cap'n. Oh look, your user's actually Captain Henry, that's fun.
A few things:
-The White Fang probs isn't old enough to be around when Juno was young. I'm thinking 50s-60s for her, but if she's younger than that it may be fine. A note is that on this board the White Fang get violent and all that shit nine years ago, so Juno probably wouldn't have quit until then. Unless it was more about focusing on her job or whatever. Not too big a deal.
-Why were Acero's parents killed though? And why would the killer want to go after him but then only burn him and not finish the job? For that matter, why'd he come to Acero at all? To gloat and give away the fact that he killed them, giving away his secret and making it so he had a threat to look out for?
-I'm no expert on prosthetics, but I'm sure that it takes more than a week to give someone prosthetic limbs. First you've gotta measure and size and resize, there's paperwork and shit, and then it takes some time for the limbs to actually be made and arrive. Not sure how long this would take, but definitely longer than a week. Also there's no reason for the limbs to be put on when he was sleeping.