I can totally understand how you feel. My MIL, even though I love her dearly, has tunnel vision at the worst of times and her becoming a grandma was the biggest thing ever, not that it was our baby and our moment. She got me so worried that she was going to take over on the day that I made up rules on when things were going to happen...ie; they couldn't come in and hold the baby until at least an hour after bub was born. It turned out that she wasn't that bad on the day and gave us our space. But I still can't work out why she wouldn't let us tell any of DH relatives what we were having before bub was born...she wanted to tell everyone that it was a boy once he was born...not just that the baby was born!!!!!