There's quite a lot of agencies involved already - Social Services, our local hospice (who are wonderful), district nurses, Parkinsons' nurse ... I think Mum will cope once all the stress and grief is over and she's had chance to sort herself out - they live in a bunglow with complete level access and a full wet-room, so she can actually manage at home quite well. But at the moment she's struggling, and I do worry about her social life once she is on her own - Mum and Dad have always done things together, Dad was the driver and many of their friends live some distance away. I'm sure it will all settle down and sort itself out, but for now I worry.
Thank you so much for your kind words H&S - you have no idea how much of a help it is to hear someone else express EXACTLY how I feel. I'm not depressed - I'm grieving (eventhough Dad is still with us). It's good to know I'm not alone in feeling this way.