Not so that it's confusing for the viewer: It is not so shocking for us that someone can speak to someone 20 years back, and that they can change the present, but for the people involved it's very confusing.
We get to se writing kind of wobble and dissappear, after the detectives have talked and changes what happened.
It's a crime story, so people get arrested and put in prison. English is not my first language, so I am not quite sure of the nuances of the word incarceration, but, you know, people are put behind bars for shorter or longer time.
When we hear that she was pregnant is after she survived as opposed to before. So first she is dead, then she is not - and then we hear she was pregnant.
Episode 2 or 3: We are told that one victim is rescued and was pregnant, so the child could have died. She doesn't look pregnant when we see her, and we don't see the baby.