4 years ago I gave birth to boy-girl twins at 27 weeks. My boy became very ill and after 2 months and 4 surgeries he passed away. I had my rainbow baby 3 years later. My MIL seem to have forgotten about my son. She never speak of him. On the 2 year anniversary of his passing she told me that I muststop doing things to remember and honour him on his birthday and day of his passing. Last week she bought clothes for my youngest daughter and his surviving twin sister. She bought matching clothes for the girls and told the surviving twin "Now you and sissie are twins". AIBU to think this is incredibly insensitive?