My mum was diagnosed with vascular dementia this year. Recently she has become very depressed. Crying which is unlike her. Is this down to the illness or is this something new. She seems to have gone downhill rapidly this last few weeks. Memory is worse not remembering any conversations with people from day to day. She has become really anxious and shaking. Dropping and spilling things. When I ask her she just replies. "I'm ok" I'll be gone soon. I find this really upsetting. How can I help her. Any advice please. She has battled lung and breast cancer the past 3 years as well. She is giving up. Help