TWR: Your post is a bit judgemental.
Note: Please refrain from being rude, abusive or judgemental - members come here for advice, not judgement! Members who offer only moral judgement will be suspended.
And NO, it is not correct about what was hers before is hers. The starting point here is in whose name the assets are held. If they are held in joint names on a joint tenancy, there is a presumption that they are jointly owned 50/50 - if they are held as tenants in common on an unequal basis the presumption is that is what the parties intended. That presumption can be displaced by evidence of the common intention of the parties, but that remains the starting point.