I have not had the opportunity to fly for a commercial carrier yet, although I remain hopefull.
I have had however similar events happen in my life, such as a 4 month old son end up in hospital ( 3 hospitals in fact by the end of it all) just as I was about to do my ATPL's and have had to delay and re-brush up for my exams.
I too have had to spend 6 weeks at Kings College hospital lying on the floor by my sons bed, not knowing what his future was to be, whether he would come out of hospital or not.
The fact that he recovered was the best thing that could of happened in my life, and all the examinations and flight tests took on an air of insignificance afterwards, I had my son back and that was the most important thing.
I think what you have written has been great reading and having seen some of my own life in your story, I can only feel great respect for what you have gone through,