On the plus side, at least there is enough stimulation in the Home that she doesn't feel the need to ring Directory Enquiries every few minutes for the human company. That proved very expensive last year.
On the negative side, I'm saddened that she has lost the knack of staying in touch with her friends.
The latest bill arrived this morning. There are only 10 entries in all. Looking down the list, I see the 4:45am call that disturbed me in April. After that there are a couple of calls and then signs of a further decline. I see variations on my number, where she's made single-digit mistakes, or repeated a digit.
After that she is dialling too short, with a 5 digit number, a four digit number...
The final attempt is '01'. That was a couple of weeks ago.