Horrific for sure, not one but two huge losses. May you stay strong through this trial.
The bolded reminded me of my mom, years ago. At age 55 she was diagnosed with emphysema, thanks to 40 years of 2-3 packs/day. She quit cold turkey, but over the next 15 years her lung function gradually failed, the final 18 months on O2 24/7. In the last months she felt that she could never get a full breath of air. Her two non-smoking sisters lived into their 90s.