Excusing no one but pedophiles manipulate. They groom. Not just the victim. The environment.
It's how it happens. You don't pass your child to a stranger in the park fir fear of what could happen. But uncle, pastor, boyfriend? Someone you thought you could trust? Someone who has been in your life, you think you know, who hasn't done anything sketchy in the past?
JS seems lacking in a lot of ways. Vulnerable and needy in her own right. Single mom. Easy prey. Maddie was young when that CRIMINAL entered their lives.
Again no excuses, trying to understand. SS came into their lives and probably love-bombed -- ack -- young Maddie, and JS failed to see that for what is was. Probably felt good. A father figure. Family. A mom, a "dad" and Maddie. And Maddie probably liked it too. At first. And then SS started pushing the boundaries. Alone time with Maddie. A park. A real McDonald's. Then hugging, tickling... pushing boundaries. Help with baths. JS likely saw the signs as engagement. Helpmate. Not the fiery red flags they were. More and more inappropriate. Cuddling, snuggling. It's no wonder Maddie didn't want to sleep alone. It was likely safer to sleep in Mom's bed, even with the pedophile in it. Maybe nothing ever happened to her there, and again GLARING RED FLAGS, I'm guessing by them JS felt that SS was a vetted steddad and somehow that was safe and okay with her.
She may have made the colossal error in putting the burden on Maddie. If something bad were happening, Maddie would tell her. If JS had suspicions, it's likely both SS and Maddie denied them. SS because he's a pedophile. Maddie because she was a victim, groomed not to tell.
Incredulous to me of course how she could EVER endorse an unrelated male -- and ar a certain point, ANY male, to share a bed with her minor, but I think she was trusting her judgment, a fatal error. She didn't have GOOD judgment.
What is especially tragic is that somehow she booted him from their home. It should have stayed that way.
He returns, in through the front door, and Maddie is DEAD within hours.
I'm going to guess that SS did a number on JS's psyche too. IMO SS "picked her" because he knew he could manipulate her. Just like he was with the recent girlfriend. Feel her out for what offends. Pedophiles IMO can be very patient people. Looking for opportunities, making opportunities...
I'm not sure, even now, that JS could process what occurred... it's entirely possible that her energy is and has always been expended, managing her own mental health. And sleep. And that what happened -- SS molesting and murdering her daughter, on her watch and in her home -- is still all about her (JS) and how it impacts her. And her sleep.
If she had greater capacity/empathy/balance, she'd have done better. Worse, Maddie had extended family and a dad/stepmother, and it would appear that, instead of inviting the village in and trusting THEM, she edged THEM out, in favor of SS.
She'll pay for that for the rest of her life. Whether she understands it or not is an entirely other thing.
The "normal" under which Maddie lived is devastating.
JMO