Credit: SWNS / Isobel Barnes<br /><br />A 22-year-old widow is travelling the world solo - to help carry out her late husband's bucket list.<br /><br />Luke Barnes passed away earlier this year aged just 34 - leaving behind wife Isobel.<br /><br />He was diagnosed with a heart muscle disease in 2019 and died from multiple organ failure while waiting for a transplant.
