Its all so easy in retrospect - We don't know everything about the family and their relationship because most of them cant tell us the truth.So how can we begin to judge . I can imagine as the call was brief and appeared to finish abruptly I would have tried to call back especially if I had not heard it all clearly .After that yes I would probably have called 999 - but we have to remember Jeremy may never have imagined at all what his sister could be capable of.
I will just tell you this - one night I very nearly died in a choking incident at home - it was so close that I thought I was going to die trying to make myself vomit over a bin - I burst a blood vessel in my eye and was on the point of passing out but I could not tell my family what to do because you can not speak. We all know my family should have called an ambulance before trying to help me - but they didn't. Because they were trying to establish what was happening and trying to save me ( none of them knew first aid)
Its easy to look back and say - well it turned out ok ( my husband saved me) but it may not have and then they would have done the wrong thing.
If it turns out JB is innocent - we could say he made a huge mistake in his actions - that's obvious now - or if he is guilty he made a huge mistake even trying to make up a phone call .
But personally I don't think asking what we would do makes one single bit of difference , even if you asked 100 people - they were not there - they did not hear the call and they do not know the family dynamics.
IMO