Power of Attorney appointed by state or some other third party while I make arrangements to move?

Let me start by saying I love my mother, truly. She is full of love and kindness. At the same time, she was overpowering, possesive, and didnt understand mother/daughter boundaries.

My mother is bi-polar depressive, overweight, diabetic, and cannot walk (she fell into a diabetic coma, and never followed up with her therapy to regain muscle mass). I have, over the years, been her caretaker, her grocery shopper, the one who spoke at her doctor's appointments, her cheerleader, and her admonisher when she did not take care of herself. Unfortuantely, she didnt always listen to my advice, and there was only so much you can do to help someone who doesnt seem to want to help themselves.

To make a long story short, I live and work in London, England, and my mother has been in a care home for the past year and a half, after she lost the ability to walk and to clean/dress herself. A dear family friend has had joint power of attorney with my while I was studying and working in England, but unfortunately she is no longer able to assist. At the same time, my mother is losing some of her mental faculties, and I am not sure how much longer she will be able to remain in the board and care home - she is currently in a nursing home for psychiatric evaluation.

This brings me to my question. My partner and I are doing everything we can to secure a move back to California, but we can't realistically afford to do so until one of us at least has the promise of work there - I would be no good to my mother if I couldn't properly take care of myself! It will probably take another 6-8 months to arrange the move - we are doing everything possible.

I am an only child, and my mother has no other family. She has also alienated most of her friends. I am frustrated with her (she is only 65 and has taken no care of her self!), but I also love her immensley. The resulting guilt is horrible.

Are there any provisions set up to appoint someone else to be power of attorney while I am still living out of the country? It would be temporary obviously, as I am moving back. Surely there must be similar cases, or some advice on a similar situation? Any advice you could give would most appreciated.

Thank you from the bottom of my heart

confused daughter.