fairy
Hopefully, you have all had some sleep.
Loopy made a good point about your PIL being biased towards their son, as I'm sure your parents are towards you.
Also, the girls will want to see daddy and that is only natural. However, this weekend may not be the best time, at least until you have had a chance to talk to him.
I think it really has to be just the two of you, as others have said.
You may have even told the girls that they can see him at the weekend to ease anxiety. Completely understandable.
Maybe someone can take them out for a while, PIL if you trust them to say nothing? But that is a decision only one you can make.
Stay strong. Stay away from your mobile please and take today one step at a time.
Go through those notes and do what ever you feel able. Be gentle on yourself.
Gathering important documents into one safe place is also a good idea, as Mum72 said.
Can your wonderful friend stay a while longer today?
Keep posting.
Ask if you have any questions or doubts about anything, however silly you may feel it is.
There are too many woman who have been where you are and can offer a wealth of experience and advice.
Take good care x