Game is fun, though you kinda broke my suspension of disbelief with them going to the police station as civilians to interrogate a suspect of an active investigation.
It just beggars belief that they would actually be allowed to do that. If it's something you want to keep, my tip would be to just make the mum character into an actual cop. It fits what we know of her and would be good characterisation for her, especially if it's brought up earlier.
The scene is still pretty silly in those circumstances, but it makes waaaay more sense that she could leverage her own sway to het MC in there, rather than just sweet talking the desk cop.