I am hoping someone can give me a few answers please. Mum was diagnosed with vascular dementia about 3 yrs ago. She still lives alone but now in a over 55 flat as she leaves her door unlocked all the time, she knows who we all are still, she remembers things from past but not things a few hours ago. She won't make herself anything to eat or drink, she forgets her purse etc, no birthdays remembered, or current year, can't remember how to write words all the time but generally appears relatively normal to others. Is this normal, please advise.