BBM, "Tell Sally I'm angry about the car" was to identify her for Sally? It's like something a spirit medium would say and the customer obligingly fills in the gaps and is convinced. Could mean all sorts of things, like an argument they had in a car, or Sally once taking the family car without permission, or Sally having taken out a car loan against Marion's advice/knowledge, or Sally refusing Marion a lift somewhere. It doesn't help convince me that that was Marion.RSBM- To me, it would be a really odd statement if it were not for the behaviours before Marion left for her trip. Quitting her job, not taking a leave without pay. Selling her house. Giving some of her antique furniture to Owen and Sally, as it will be theirs one day anyway. Putting other things in a shipping container- not a storage unit, but a transportable shipping container, that no one knows the location of. Changing her name by deedpoll, but then only changing her passport- nothing else- like a temporary travel name, all above board- hard to trace but cant get into trouble with the law abroad, but not a forever name. Then she is asked to say something that only Marion would know- maybe on the spot the car was all she could think of?
I'm also wondering whether the bank's phone call was to an already established contact number or was given by Marion (or not-Marion) at a visit after the overseas trip.