How can I help my elderly disabled friend with a marriage problem?

My 65 yr old friend is in a serious situation and too far away for me to physically help. Her husband of 40+ yrs has abandoned her in an isolated rural house. She is disabled and has poor vision. There is a lot of snow and she is unable to get out. She has located the local help agency-but they cannot provide any services to help. Her friends have all died or moved too far away to help. She has no help available and is extremely upset and does not know where to turn. She has thought of calling emergency services-but does not want to waste their time as they are not really appropriate in this situation-she is not ill- but just needs to stay SAFELY in her home. She is distraught that her husband will not answer her phone calls of requests to return home or speak to her or even help her. The husband will not answer his phone at all. I have called-but not showed who is calling as I think he will not answer the call from me. The husband has always been quiet and unwilling to make friends or socialise, but his wife is a lovely, friendly person. His action seems to be far too cruel. What can I do to help? Is there anything to be done to make the husband accountable for his actions or reconsider his action?