I'm glad you are putting it to one side Droopdrawers, it's all so overwhelming and terribly sad isn't it.
I do agree with your BIL following my experience with my 'new' stepson, she will want to see if she is mentioned. I was horrified when he asked to see the will and worried he would try to contest it. I had given him copies of the Condolence book pages and photos to take away, I didn't even think of giving him a copy of the will at the time of his visit. I had a mirror will with my husband with the stepson as a 'long stop', and changed it as soon as I could face doing it.