HazelEyes, please don't take this personally. My Mum lived with me for 4 years. I have siblings but my house was the most appropriate for Mum's needs. I don't have one second of regret about being her carer. However in your sisters defense I must say that caring is all consuming - general daily care , feeding , washing, managing hospital,
GP, and hair appointments!!! It really is full on . Four days will fuse into one for your sister. She will have been so intent on looking after your Mum that everything else will go on the back burner including her own health . My advice to you is to message/ ring your sister regularly and check on your Mum's welfare rather than waiting for her to contact you with news when her mind is so full of her caring responsibilities. When you ring please consider your opening words ie " How are you managing with Mum hope you are not neglecting yourself" . Ask about her before asking about your Mum. Ask your sister what you can do to assist her. This is not about you and your feelings about your sister it is about you showing an understanding of your sisters situation. I wish you all well during this difficult time.