The new information dependent on accuracy of reportage and what means it passed through, combined with historical knowledge of the family, raises a couple of dozen questions to be explored.
Just one being how much of the information about themselves Arthur and Mary passed to the landlady was accurate or true, to begin with. Obviously she was not from Australia and there's various possibilities how this misinformation came about, but it could have been deliberate. I am also speculating they may have told the landlady they were a married couple.
By this time Mary's (step) brother Alfred, once in business with her brothers William and Fred in photography, was successful enough as a merchant and industrialist to have London offices so there's possibility it played into this situation.
Clearly the family made a pact to not mention it and just let the 'scandal' die and that was a relatively successful strategy. Especially as info was thin on the ground and the incident was relatively minor and out of the news cycle pretty quickly. There are no records of the deaths I can find which sparks a number of questions in itself pointing to what *really* happened.
As I say on the other thread the Tyrees were no stranger to illegitimacy and had a curiously cavalier to creation and raising of progeny, to put it nicely.
So I think the illegitimate child was far less of a reason than, say, other factors may have been for all that happened.
I should clarify that my understanding from what I read is what was inferred between the lines, that it was likely a double suicide or rather, triple if you count a child which sounds like it was quite a way along, But who knows, for sure.
Mary may have fallen in and then Arthur jumped in to save her and also drowned but given her specifically odd behavior and words to the landlady in the last conversation and sighting of them alive, well as it was relayed via the press, it sure doesn't sound like they were planning on coming back.
There are still a bunch of things that don't entirely add up about all of it. i guess we will continue to explore and see where that takes us.
Whoops, In my excitement I misread the name in the newspaper they had the surname as Tyrel. As she had not been identified at that time I am sure it should be Tyree as all the other information matches