<human>: Can you give me the gist of the text in a nutshell?

This all started a few years ago when my grandpa died. My grandma was obviously distraught, and went from smoking 1 pack a day to 3-4 packs a day, and she also went from eating normally to eating an extremely small meal (a portion most people would call a "snack") once, sometimes twice, a day. Since then she has also stopped taking all of her medication and going to her doctors offices. She has high blood pressure, diabetes, and had a left anterior descending heart blockage that caused a heart attack commonly known as the "widowmaker" and has a defibrillator installed as well.

This has kept up for over three years now. She's started having blackouts while driving. She said she had chest pains that exactly mimicked the pains she felt when she had her heart attack, only much less severe, and refused to take nitro or aspirin. She complains of constant fatigue and joint/muscle pain in her shoulders and chest. She also recently quit her job (she worked part time, mostly for a social life) and gave all my grandpa's stuff to my mom and aunt and us grand kids. She admits she only gets about 3 hours of sleep per night even though she's always tired. She constantly does physically demanding things even though she knows she's not supposed to. She's "loaned" at least $80,000 to anyone who's asked her for some money after they found out my grandfather left her $100,000 when he died. She's begun having "accidents" because she won't (she can still get up and down and move around extremely well) get up to use the restroom. She has started to push away both of her kids and us grand kids by being a constant asshole to everyone that is related to her. We've tried to talk to her about it, but she always blows us off, starts yelling, then says she never wants to see us again. 

We want her to live a full and happy life, but she doesn't seem to be open to the idea of it, and is doing pretty much everything she can to die except brushing her teeth with a pistol, and I don't know what to really do.
<bot>: Grandma has almost stopped eating, almost stopped sleeping, stopped going to the doctor, and has given almost everything she has away. She's also trying to distance herself from the family. What do reddit?