Hi Peter here, my Mum has Alzheimer's and was diagnosed about 2 years ago. She has just turned 61yrs. Recently she has been soiling her self and will only let my dad take her to the toilet and bath her. although, my sister lives with them she will not let her bath her or take her to the toilet and when she does becomes very moody and aggressive insisting that my dad does it. My dad is worn out with caring for my mum 24hours a day. Has anyone got any advice of how we can get her to trust my sister to help dad.