DP & myself cut mil off due to her being absent in my sons life, she has only seen him 4 times in his life, he’s 2 & 1/2, she’s been invited to every family function, bbq, birthday party, new years gatherings, Christmas gift exchanges & she either cancels last minute or just doesn’t show up. We had a huge row where MIL told me to “stop barking” & told DH to “put a muzzle on it” & “tell your dog to shut up” after I expressed to her that dh & I were fed up with her constantly letting us & her grandson down. Since then we have been no contact, she’s not been in touch to apologise or to wish her son & grandson a merry Xmas etc. DH, DS & myself have spent Xmas with my parents this year, we took some pics of DS playing with my moms Christmas tree, my mom posted it on fb & hours later I noticed MIL had stolen the photo & posted it herself with ‘merry Christmas from mine to yours’ insinuating that she’s had DS for Xmas. People are commenting saying things to imply they think she has DS this Christmas. I’m livid & don’t know what to do, any advice?