I recommend you talk quickly to a solicitor and your mother's GP and considering obtaining an Enduring Power of Attorney for your mother. This is a legal device which will enable you to have lawful authoritity for the control of her affairs if she is becoming incapable of looking after them for herself.. I think you really need some legal advice, because if she is becoming incapable of caring for herself and needs to go into residential care, Social Services could claim that she has divested herself from the proceeds of the sale of her house to avoid having to pay for her care. This is a very difficult subject but it seems clear from what you have said that somebody needs to take control of your mother's affairs quite soon, and have the legal authority to do so to avoid family disputes in the future. If a family member doesn't take control of her affairs it's possible that Public Guardianship might have to kick in. This is where State officials will take over your mother's affairs. Also, if you need to take over responsibility for your mothers finances, the Benefits Agency, banks, building societies may not recognise you acting on her behalf unless you have Power of Attorney and then things will become in a even greater mess. More than once individual can have Power of Attorney and you can operate jointly or individually but obviously you must be able to agree on how her affairs are handled.