My friend has two sons, both of whom are married with children (I’ll call their wives DIL1 and DIL2). Neither of the sons or their wives have spoken to each other for several years, apparently DIL1 has blocked the youngest son and DIL2 on all social media and refuses to have any contact with them. my friend also has a poor relationship with her youngest son and DIL2, the cause of which I fear was years of unintentional favouritism shown towards her older son and DIL1. The youngest son and his wife have apparently tried to make amends with the family several times over the years, but communication has always broken down.
The eldest son and DIL1 had their first child a couple of years ago, following which she suffered with severe postnatal depression for a long time. Three years on, she’s now recovering and is fundraising for a charity that helped her through the tough times. The younger son and DIL2 somehow heard about this, and made a generous donation, seemingly as a further attempt to reconcile. DIL1 is refusing to thank them, has been accusing them of ruining her plans and apparently believes they donated for ulterior motives. She has apparently also considered asking the charity to block their donation. My friend has also confided that she is (once again) siding with DIL1, even though I advised her to gently encourage DIL1 to show some gratitude towards the younger son and DIL2. I feel DIL1’s reaction is completely unkind and ungrateful.
Is DIL1 justified in reacting this way?