Am I in the wrong for biting back on a Facebook post. It’s my ds first birthday in a few days my mil decided without being invited to bring herself and my dh older daughter with another woman to stay with us for 9 days. She has made it very clear it’s so sd can see her dad as she thinks she is left out. Just posted on face book she is bringing granddaughter to see her dad, no mention of her grandson or the fact it’s his birthday. Really peed me off she only cares about the granddaughter and not her grandson. Feels like she is overshadowing his birthday on purpose.