I'm very nervous for my sister

She's had labile uncontrollable diabetes for 27 years. It has started giving horrible complications in the last few years. She's nearly bed bound as the nerves on her feet are dying...her feet feel horrendous pain but numb too. It's heartbreaking that they're also becoming discolored Bec neuropathy is also caused by high sugar and low circulation. She just found out there's thickening of her heart on a recent Echocardiogram.
Diabetes can cause this. It's just another negative setback and could get serious if she doesn't get her sugar down. They say she really needs hospitalization but insurance doesn't cover it.
She talks about how she knows she's going to die soon. She says it every week. I just couldn't live without her. She's my best friend. It would be beyond crippling, I can't even think of it. I just hope we can find a new doctor to help soon.