My Mother has dementia. She lives with my sister. Lately, it has been difficult to get my Mother out of bed in the AM. She says she is "comfortable" and happy where she is. At lunchtime, we insist she get up as she has not eaten all day. It is not every day but becoming more common. When we ask her, she says "she's fine". We know she is depressed and have tried to help her with that. She refuses to discuss it saying "I'm fine". We have offered her all kinds of activities but she is just not interested. How do we address these issues?