I have a special attachment to this book. I bought it on holiday not long after it came out and read it obsessively. I'm not sure WHY I liked it so particularly, though it is good - the story's pretty simple, but it has some lovely little touches, like talking about Henny trying fruit gums for the first time.
Anyway, I reread it yesterday, after spending months online trying to find out what it was called. It's still utterly charming. It's completely divorced from reality, of course, but I tend to like my children's lit just that. Some people might find it a bit too cute and I understand that, but sometimes everyone needs to read a simple story about an old lady and a dog with a happy ending. After a tough few months, I certainly do!
Please read this to your children, it is worth it.