Yeah, it's just preference of something I don't want to see I know that it happens and everything just would hate the idea of that happening with Bella. It's much more likely she is just a friend of the sister and the family and has taken Jill under her wing.
I don't remember if it was you, Mormont, but someone had the idea that the locked room is a baby room. Thinking like this, it could have been her kid's room, he could have died of something, maybe cancer to destroy us more when we learn about it. Her marriage could have been strained by this, both she and James cheated on each other and now can't even see each other because of how much it hurts.
It's dramatic and a tragedy that happens and will make you feel like shit learning about, eventually.
Burke seems to be a sex addict. Besides being married to nympho Jade, it seems he tried to have sex with Cathy and Isabella and had sex with 3 (?) female students. (Maybe he ordered a take out meal from Quinn?)
At the end of chapter 3 there is a mysterious visit to Bella's house ...
Burke fucked three students. My money is in Quinn, Riona and Camila. I also don't think he ordered take out, but that they did have sex with him to keep the restaurant open, so, not just a glory hole.
In Episode 3 i interpreted the Bella scene as her starting to confront her past.