There is another thread about this tragedy and a poster says she is friends with people who knew Emma and that he did have form for being controlling.
I am also from the same world as Emma. Living on site in a boarding school is a goldfish bowl- the whole family is on show, people will gossip and judge if they see any cracks in the family unit. But as your career is wrapped up in it, it becomes vital to keep the illusion alive.
As a pp said:
*
You try desperately to live a life that looks as normal and happy and successful as possible to external observers, so that other people don't suspect. Because being in that situation brings a deep sense of shame - shame that you ended up there, shame that you can't "fix" it, shame that you can't get yourself out of it as easily as other people might expect you to, shame that others will judge you.*
The fact he called the police on her and withdrew the complaint is evidence of coercive control. An abusive partner would do that, showing her what he could do to her career if she stepped out of line.
I am speaking from first hand experience when I say he could have twisted the situation to his advantage and changed the narrative so that he was the victim. Everything she had worked so hard for in
her career could have been at threat from him. Also he could have been using threats of taking the daughter and using the evidence of having had to call the police previously as the fact she is an unfit mother and that he deserves full custody.
She may have been constantly trying to appease him and no one would have known unless she told them
man capable of killing his entire family might be someone his wife tries to avoid upsetting.
I had met her a couple of times and I instantly warmed to her. Perhaps I spotted a kindred spirit, I don't know. But I can certainly empathise with why she would have done nothing, and also could not call the police because of the scandal it would have entailed. I just feel so much for her family member that she did call.
On another note, in response to the gun argument- in his rage I think he would have killed her regardless. But I think Lettie would have been spared if he had killed Emma first with a knife or something and then knew he had to inflict that on his child. But no one will ever know for sure.