How can I help my grandma?

Ok so like shes 82 years old. I feel like she is getting alzheimers disease or something. Well for the past couple of years she's been reckless and forgetful. My grandpa is kinda useless because he's a uneducated alcoholic at 84. Any ways she was always the leader of the family because she was educated even went to college and she controlled the bills and everything. Well recently she's been drinking so much alcohol and gambling it's kinda gotten out of control. She's really behind on her morgage of her house and many other house hold utilities. And usually when she drinks or gets drunk she forgets everything like where she is or stumbling or slurring her speech. And about 5 times she has been drunk and cooking and it burns to the point where it's almost a fire. Does she need medical help or something because she has never been this out of control before and I'm worried she may accidentally kill herself or burn down her house.