Bonnie,
I've been away on the Continent for a good many years, you may just remember me in the Jack Hayward gang in the 80s. After singing with CSH's House Choir for a year, I've just met up with a new Singer's Club at Bowes Park, and live not far away, at Oakwood (ie within a couple of miles of Diane's home). Your word is, of course, good enough for me. I don't greatly follow MudCat, so I've only just woken up to this, but I'm posting this as although it's too late to do any real good now, none the less there are folks on the ground who might be able to help if it turns out there's something needing to be done. I certainly discovered Borchester's postings and felt they made sense.
The Bowes Park club's only just started, under Cath Perry (used to run the CSH Saturday voice group) and Mary Blake. So I guess if there are loose ends, there are folks who can help without too much hassle. For example, her Facebook page remains open, so I'm wondering what happened next. Sometimes if they're hunting for heirs, the funeral may be deferred. Does anyone who knew her know if she had a family to take care of matters? If they don't know, don't suppose, the last thing anyone would want want is to impose. But on the other hand, if she were to face a Rigby funeral, I'd think we might want to do something about it.
I'll check back here in the morning, unless anyone really knows I'll check very quietly with the hospital - I'm passing in that direction anyway.