You don't want to hurt anyone's feelings, but if you've discussed it with your partner and you both agree that your mother-in-law (MIL) will not be allowed in the delivery room, you may want to think of a few ways to tell her that won't hurt her feelings.
Hospital regulations
Let her know that the hospital will only allow one or two people in the delivery room at one time and list the two people you've chosen to allow in the room.
Have the nurse or doctor tell her
Your providers are there to support you. They will be more than happy to let your MIL know that there is a limit and she cannot come in.
Have your hubby break the news
Simply put, it's his mother so he gets the luxury of telling her she's not going to be in the delivery room. You've done all the work so far.
Be blunt together as a couple
Sit down together for a nice dinner and tell her honestly that you'd rather her not be in the delivery room.
Decide on a different time
Even if you don't want your mother-in-law in the delivery room while you're pushing, you may instead decide to give her time in the room during another part of the labor.
Don't make it known when labor starts
No one wants a horrible labor experience, but no one wants to have a mother-in-law with her face in the doctor's way either. Some family members are just too pushy to understand that no means no. If that's your case, just don't tell her when labor begins.
And remember that no matter how you choose to break the news, the most important thing is that you are comfortable on your delivery day!