If she is the "helpful" type of MIL, You may be surprised how much you appreciate her being around. We built our house on land right behind my in laws home (I'm not crazy) and when we had DS, my Mother in Law was a Godsend. They have come to see him pretty much every day in the last 2 years since he was born but they usually listen if we want some alone time too. When we came home from the hospital, I really appreciated her morning visits that allowed us to take a nap if we were up all night, take a shower, and take care of myself cause lord knows there's a lot to take care of after birth... I am really really close to my mother in law and had no issues with nursing around her or my father in law for that matter but I was of the mindset that I was feeding my baby and if there was anyone that didn't like it, they could look away. My Mother in law would come up to our house "on demand" whenever I called her in the morning if we had an awful night...one of those "growth spurt up all night" kind of nights. She was my morning angel. She would take our son and allow me to go to bed for a couple hours until he needed to nurse again. some nights I would have been crazy if it wasn't for knowing she would be there in the morning if I needed her. Our son is now over 2 years old and extremely close with my MIL. She watches him through the days now that we are at work and I really appreciate everything she does. Don't get me worng, we have had our minor disagreements but nothing serious... now I nderstand not every situation is like this as we are extremely close but you never know how much help she may be in that first week...when you have no time to make meals, do laundry, dust, clean, etc...she will be there to help out! this is just my two cents but if you aren't comfortable with her there than by all means suggest she stay elsewhere. We did limit other visitors for the first few days but not our parents/siblings.