If you keep your feelings bottled up, you'll only be building resentment that will quite possibly end up being directed at your husband. There is a great book called, Crucial Conversations. I highly recommend it. As you begin your life as a parent, you will, inevitably, need to have a relationship with your mil that you feel you can express yourself and be heard. If nothing else, and even if she doesn't understand your feelings, at least you'll feel good knowing that you've spoken your truth. It doesn't have to be confrontational to have crucial conversations, and you don't need to feel guilty for having your feelings. You are more than justified in wanting quiet time and alone time with your new family. I would also suggest trying once again to express your feelings to your husband about the effects your mil is having on you.