My mother has been diagnosed with dementia. I am used to her mood swings which the family tries to cope. In the past 6 months or so she has begun to speak about an event and add a town or name of person that was over 50 years ago in another state. She said just recently that she had gone on a trip and decided to come home because everyone she spoke to had the name last name (her maiden name). She didn't actually go anywhere but states it as fact. The family doesn't argue but I am wondering if this is common or a precursor to something else. Any advice?