My elderly dm has just been admitted to hospital with infection and injury. She is an intelligent woman, fluent in three languages including English (I only speak two of them because our family doesn't use the third any more), but with the beginnings of dementia. She is very distressed at being away from her husband.
When staff talk to her in English, mum is coherent and co-operative, but when she talks to me in our mother-tongue she is completely disconnected from reality. Irrational fears, describes things that could not have happened. I understand that this is part of the infection and of the dementia.
I thought that speaking our mother-tongue would be reassuring, but I really don't know. Would it be better for mum if I only spoke English with her right now? Would it calm her? OTOH the more we talked the more connected she became with reality, and she seemed to feel safer. I really don't know how to help her.