I'm glad to read that your son and his family were in for a visit and all of you had a great time. I'm sure things in the office are far more peaceful and less stressful w/the BIL gone. Maybe he'll opt to quit and find something else while he's gone. (One can hope.)
I'm sorry to read that one of your sister's doctors is kind of pushing for a nursing home. If she's able to do some things for herself, she may not need a nursing home...but maybe someone to come in and check on her during the day. That is something to think about when she's ready to do so. Some doctors are entirely too quick to talk up nursing homes and it does make you wonder if they get kickbacks and especially when they give you the name of one specific place.
Your D will contact you when she's ready. She's got a lot going on right now and her focus is on her situation. You might want to drop her a note today to see how she's doing, etc., but stay away from the situation...allow her to come to you to discuss it when she's ready.
Try to enjoy the holiday today. You've got a lot swirling around you, but it's a day of rest, fun and celebration.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.