While they certainly aren't the first family to squabble over baby names, this SIL sounds especially toxic to her other family members . People oftentimes feel strongly about the names they choose for their babies. After all, a name is the first thing someone knows about you, and it sticks with you for life. Some siblings choose the same name , fall in love with it, and fight about the name with their family, but not quite to the extent that this person did, as they shared in a post to r/Entitl…