Sad story and a horrible coincidence. Life is too short to not do what makes you happy as long as you use some common sense.

My mom died almost 9yrs ago at the age of 51 from a blood clot caused by knee surgery that moved to her lungs. She'd spent the previous 5yrs or so helping to care for my 2 grandmothers. They both passed within a few months of each other. My mom & dad were finally going to be able to travel and enjoy each other without having to worry about kids or ailing parents. 2 months after my last grandmother passed my mom went to have her knee scoped and was gone 2 days later.

Enjoy today! Tomorrow isn't promised.