<p>I’m suprised that some posters are not willing to accept simple facts of OP’s several posts regarding his inlaws. Their daughter, his ex, is estranged from her parents, and not supporting her daughters. The inlaws are wealthy, significantly so, and have a conflicting history of “gifting” (downpayment for OP’s home, suing for repayment during OP’s divorce, though it houses their own grandchildren). It sure sounds like GPs use their wealth as a carrot and a stick. Sure sounds like folks who’d favor one child/grandchild over another.</p>