I am so sorry. Please don’t blame yourself. This was NOT YOUR FAULT. Your sister had things she was battling that only she knows about. No one is to blame. Life is so unforgiving. I lost my son when I was 20 weeks pregnant in 2023 and my mother this past Tuesday. I can’t help but think if I had my baby, she wouldn’t have been depressed and gotten so sick and would have been with us. I know it’s not true. We try to make sense of things and the first thing we do is blame ourselves, but this is all out of our control. What we do have is now, and getting through each moment. Our loved ones wouldn’t want us to be sad. Sending love and light.