Thanks GAG. It was good to read that perspective. H did tell me why and it all sounded quite 'functional' but the time frame allowed for it to be an ongoing arrangement if it worked out. However, she has moved her son from his school so I don't see from her perspective that she'll be going anywhere in a hurry.
I will look for the Jed Diamond book. I've read some of his stuff before and found it worthwhile.
