@Wynona taking time out of your day to catch up on your sleep, is not about you but your baby. Unless you look after yourself and catchup on your disturbed sleep, your ability to look after your baby will be compromised.
The art of being a good parent is to learn what is required to be done to have a balanced lifestyle so that everybody is bless, including yourself. Wisdom would suggest that you need to delegate what needs to be done, to others like you sister in-law, so that you can focus on what is import for you at this present time. Hand her a broom and mop and ask her to clean the home. Teach her how to bake so that she can bake the bread and brownies to free you up for other important tasks.
Shalom