Does your sister have a family and work in addition to looking after mum Hazeleyes? I just wondered as you said she lives near as opposed to with. When my mum lived in sheltered accommodation, my sister and I lived close, two other siblings abroad so it fell to us. Being two of us it worked well. However, fast forward many years and my husband and I lived a long way from my inlaws who both had mobility issues. The highlight of DMIL' s week was the shopping phone call where we went though all the things mum liked or needed, arranged a delivery slot and paid for it on the internet for them as they weren't technically inclined. It took about an hour but she loved it and it was delivered to their door. They would call to say it had arrived, how nice the delivery driver was etc. Then once a month we'd take them out for dinner and to some shops. Maybe this is something you could do to take some of the load of your sister. Also there might be something on during the day locally that your mum would enjoy, like bingo that you could arrange transport to and from with a local taxi company. Of course all that depends on your mums health and mobility but might give your sister a bit of respite and give you more input/insight to how your mum is doing. Is your name down at your mums DR'S surgery together with your sister as next of kin in case you ever need to discuss any heath concerns. I do appreciate how hard it is for you being so far away, we found it hard, speciallywhen we had to zoom down there in emergencies. Is your mum tech savvy enough to have WhatsApp where you can video call instead of just voice calling?