mjeanivey, I am praying for you
If your sister is really on hospice, then try traditional Chinese medicine, Ayurveda, or integrative medicine. Is it heart failure? They may be able to give your sister more time or make her more comfortable than traditional western medicine. There have been some studies about that, and you can find them online if you look for them. Or call a Chinese doctor, Ayurvedic doctor, or integrative medicine doctor, and speak with them about it directly. Also, I know this is going to sound crazy, but in some cultures, when people have an organ problem, they eat the same organ from a healthy animal to make their own organ get better. In other words, if your sister has heart problems, then she needs to eat heart from a healthy, grass-fed animal. This comes available as dried powder ground up in capsules, if you can't stomach eating the actual organ. But the meat has to come from a grass-fed animal because this is what makes the animal healthy. You can find suppliers if you search online. I believe some are in New Zealand. If you consult a Chinese doctor, Ayurvedic doctor, or integrative medicine doctor, make sure to tell them if your sister is taking a grass-fed heart meat supplement. That will not interact with drugs in Western medicine, but I don't know about herbs in Chinese or Ayurvedic medicine.
mjeanivey, I am praying for your sister and for you and all who love her. I'm so sorry.