I help care for my Mum who has mid stage early onset Alzheimer's disease. My brother lives in the US and would like her to visit later on this year, however, I am worried that this would be to traumatic for her and possibly make her go downhill further taking her out of 'her comfort zone'. She gets very disorientated now and also has trouble using toilets, especially public ones and struggles with locks. It is an 11 hour flight which I think she would find too much. Has anyone else been in this situation or has anyone got any ideas on the best way forward with this?