@4V29LN0n Most likely the mom was a party girl, slept around and got pregnant but the father didn't want it, she tried raising the girl on her own but gave up and went back to the party lifestyle, locking Sadako v2 up and giving her the bare minimum needed to survive.
@4V29LN0n The mother could be using them for an excuse if the police ever find out why she basically abandoned the girl. Insanity is a legal defense that could be used against the child endangerment charges.
Please, Kazuma. Look into what's going on with Sadako-chan. The poor kid deserves a better childhood. And Sadako-san needs to haunt whoever's fault it is.