Scentia
Consider that you've just had major surgery. You also have a new puppy, and this new puppy is very, very needy. All of your family and friends want to meet your new puppy. It's been three weeks, you're still adjusting to having the new puppy, and you're recovering from surgery. You have your mother and sister at your house, doing laundry, cleaning the house, making you meals, and helping you care for the puppy. Suddenly, your family and friends get very upset. How DARE you not let them come see your puppy! It's only going to be for 15 minutes! Doesn't matter that you just had surgery, it was ONLY surgery! It's all about them, and it's not fair!
You all do realize that comparing how much time OP gets to how much time DIL's family get (which is none of OP's business anyway) is identical to when your children were young and they told you, "But so-and-so gets to have/get/do/eat whatever! I don't! It's not FAAAAAAAIR!" What was your response to them then? Why should it be different now?