No I think it's quite common to think like that slarty.
But the family made an appeal too. And yet if someone came out and suggested that maybe one of them was responsible they would be shot down.
Yet it's ok to speculate about the boyfriend's involvement..
Don't get me wrong, in most of these cases it is someone who is known to the deceased that is responsible, and who knows maybe the boyfriend did it. But reality is that we just don't know.
I think there's something very, very odd about this case, because she either went out without her keys, or someone came to the flat and she went out without her keys which would imply it was someone who had a key. the boyfriend? member of her family? Why is it ok to suggest that it was the boyfriend, but would not be ok to suggest it could have been a member of the family, for instance?