Putting them in Marten's building would bring him back into focus.
Tho I voted Corpse Witch just because it would be interesting to bring her back.
It seems unlikely, but she may have ratted out a lot of important people and ironically avoided prison, but put in the witness relocation program. However, if that happened I seriously doubt she’d be living anywhere near Northampton.
I REALLY couldn't see that being a realistic possibility. The deal was she told the WHOLE of her crimes to the authorities to avoid Spooky's eternal, righteous, and deliciously painful(<3) wrath. Those crimes include using the threat of a mind-wiping(resulting in Bubble's going into a vegetative state(?)
*) to enslave a fellow AI.
Putting aside all the others, if that ONE crime itself was enough to get Station to threaten to go "Titanium Rod From Space to the FACE" mode and get Spooky to break some, apparently, God-like rules against direct involvement; I really can't see other higher up AI's, ones who'd, also, probably take a special interest in a case like that(if not try the case themselves), letting Corpse Witch off with NO time served, no matter whom she was willing or able to serve up. Even if she was able to gift wrap up for them all the evidence they'd need(a tall order) in a nice gift basket.
Nah. She's cooling her heels in the smallest, suitable thumb drive one can imagine, if Spooky has anything to say about it. And I bet she had plenty to say about it.
*I'd imagine this to be a fate worse than death for someone with Bubble's warrior spirit.