I disagree. It is Erin who sounds financially abusive, to me. She left him in 2015 when she got her money from her grandmother, and bought a house in her name only while stringing him along for many years later.
She was an accountant. She knows about money. She handled the finances, it appears.
Yes, she lent money to his siblings, but that doesn't make her a saint. Perhaps she liked having that over them for control reasons, too. Yes they were interest free, but they were indexed. Not exactly "free loans". Besides, having lent money offers tax relief for Erin.
In 2022, the fact that Simon was paying for Medical bills, School fees (expensive Anglican private school) etc and did the unthinkable and put "separated" on his tax return because he was literally separated her for 7 years prior, seems to have been the event that triggered her resentment.
She threatened him that she would lodge for child support and family tax benefit, which he said sure, go ahead, but I am not going to keep paying everything else AND ALSO child support.
Add to that, his parents wouldn't get on her side to control him financially.....
I also think she was afraid that a government declaration of separation in 2022 could point to him divorcing her in 12 months in 2023. Given her inheritances would have been divided equally among the parties, she stood to lose a lot of money and control.
Then, we have the fact that the Child Support Agency assessed him at only needing to pay her $48 per month which sounds like nothing, but they would ONLY make that assessment if her income was higher than his, because they take into consideration income but also care percentage. This shows that even though she did the majority of caretaking of the children, that her income must have been quite significantly higher than his.
In 2019 (after her mothers death and her large inheritance from that) when she wanted to reconcile, she put his name on the title of her new house which in my opinion, was a way to financially lure him back to the relationship because he was unhappy about being excluded from her 'wealth' which was supposed to be equally shared in a marriage.
Then if you add to that, that each of the siblings of Simons stood to inherit approximately $700k each upon his parents death, it would mean that the two siblings who owed "her" money could have paid it out in a lumpsum, while also getting rid of Simon and his support system (his parents), who would have arguably become custodians of his share of assets on behalf of the children because they are not 18.
They lived separately, it's not exactly like he had much influence in her life from afar - how could he be that controlling? He didn't even go to her house, and they had a cold text relationship.
I think the motive is clear - and it is financial, just like the vast majority of poisonings are.
All alleged, all my opinion only.