Given that episode 6 of the anime ended cleanly at the end of chapter 19, with Krone confronting the kids in the forest, I decided to figure out what the remaining episodes will likely cover, assuming 3 chapters per episode.
7 - Chapters 20-22 - deal with Krone, she reveals she and Isabella were raised on the farm, night talk with Krone, Ray reveals way to break tracking device, Krone falls for Ray's fake note, Isabella gives Krone a "promotion" letter
Possible changes: Skip Krone falling for Ray's fake note; instead, she could start to talk to herself about why they would lie about the tracking device, only for Isabella to knock
8 - Chapters 23-25 - Krone reacts to the promotion, goes to gate, snitches to Grandmother, gets killed anyway, flashback to giving the kids the pen and her own past, start of distraction plan, Krone's death revealed to Ray, Isabella fires Ray and locks him up, Isabella meets Emma and Norman in the forest, Isabella talks to them without hiding who she is, lots of internal monologue, Emma and Norman run for it and Emma tackles Isabella, Isabella breaks her leg, she reveals that Norman will ship out tomorrow
Possible changes: Show Krone hiding the pen before she goes to the gate; the internal monologue could be replaced with intense looks just like in episode 5 after Ray revealed he was the spy to Norman; it's possible they could choose to end at Isabella meeting them in the forest, especially if they want to flesh out Krone's flashback, but the Norman reveal is just too perfect a place to stop.
9 - Chapters 26-28 - Emma carried back, heroes regroup at the house, Norman talks to Emma in bed, has internal monologue as he gets water and breaks down, then thinks about how he'll have to die to break Isabella's plans, Ray explains his plan to have Norman only pretend to escape, Norman disagrees but then agrees, Ray explains his magic baby powers and past, Norman's departure is announced, Norman finds the pen, Norman leaves the next morning
Possible changes: Pretty clearly, they'll cut out all of Norman's internal monologues, and I think it'd be simple enough to get the gist of his thoughts through body language, especially with that water scene, and a lot of the same ideas are repeated when he talks to Norman and Emma anyway; it's possible they'll adapt a bit of chapter 29 and end on Norman coming back, which I think would be a stronger ending.
BTW, I hadn't realized until rereading chapter 26 that they hint Norman being shipped out for a non-food reason here.
10 - Chapters 29-31 - Norman scales the wall, then comes back, he explains what he discovered, they say their goodbyes, Norman monologues his thoughts, Ray explains why they can't interfere, Emma tries to break Norman's tracking device anyway, they fight, they say their goodbyes for real, Norman is led to the gate and an unexpected area, Emma goes through the day in a daze, Ray gives up on escaping, Isabella tells Emma to give up and that she's recommending her to be a Mom, two months pass, Emma reveals she didn't actually give up
Possible changes: Again, no Norman monologues; I forgot to mention for the earlier episodes, but they'll show scenes in order instead of flashing back to stuff that happened a bit earlier.
11 - Chapters 32-34 - Emma reveals she left everything up to Don and Gilda, they hash out the escape plan, Ray reveals his cans of oil and starts pouring them, then douses himself and appears to set himself on fire, Isabella comes downstairs and tries to put out the fire, she discovers Emma's cut-off ear, we see what really happened and we have ANNA, part of the Norman flashback here was already adapted into episode 6, flashbacks about Norman's real plan and how they've been revealing the truth to the other kids, then PHIL
12 - Chapters 35-37 - Emma reveals she didn't bring the kids younger than 4 years old, flashback where they talk to PHIL, Isabella chases after them and sounds the alarm, the demons rally, the kids escape by going across the cliff, Ray talks to Ghost Norman, Isabella comes too late and everyone has escaped, Isabella flashback, she comes back to the house after covering up the evidence of the escape, Emma monologues, and the kids have their first real sunrise
I don't think they'd split up the escape like this; more likely, they'd actually change the way episodes 10 and 11 are split so that episode 10 ends with Emma greeting Norman's empty chair at the end of chapter 30, and episode 11 covers chapters 31-32 and part of 33, ending with Isabella coming down to apparently see Ray on fire. Then episode 12 would have the flashbacks and explanations, and the actual escape, thus covering the rest of 33 and then 34-37, so close to five chapters.
