It is interesting in these situations that everyone wants to know what happened to my sister.
I thought it would be appropriate to detail what happened first so the family particularly Pat, the boys and mom do not have to continue to explain and second to let everyone know how quickly life can change from such an innocent seemingly benign activity. 
As many of you know Shelley was a homemaker first.  She cared and spoiled her boys including Pat with incredible cooking and baking.  Tis the time of year for Shelley to do her Christmas baking. 
On Tuesday Dec 3rd she had made several "batches"  (never understood that term from a volume perspective) of her famous Snickerdoodle cookie dough.  As many bakers know this was prepared and then wrapped and put in the fridge to cool.
At some point in the afternoon of the 3rd she went to the garage and climbed a small ladder to reach a storage tub (purple of course) on a shelf over the door. The tub contained all kinds of cookie cutters and pans in the shape of trees and wreaths etc used for Christmas baking. 
Because she was alone no one knows for sure what exactly happened but somehow she slipped and fell backwards and struck her head on the concrete garage floor. 
She was not that high in the air, her feet maybe 5 ft off the ground.  However the fall somehow freakishly caused her to land on the top of her head. 
Her youngest son Mylan found her and immediately called 911 and with the help of Zane they turn their mom on her side and tried to comfort her.  She was in the Foothills ICU head trauma ward very quickly. 
The entire amazing team of doctors and university neuro scientists worked on Shelley throughout the evening of the 3rd and through the day of the 4th.  
The X-rays showed significant trauma to the skull and she ended up with a major bleed at the brain stem.
The trauma was simply too severe and Shelley's brain function deteriorated to the point that on the morning of the 5th she had no blood flow or brain function at all. 
Shelley never regained consciousness at any time after the fall. It is hard to know for sure but it is believed that she never felt or experienced any pain.
Through out the day on Dec 5th the transplant team worked tirelessly to organize for her organs to be harvested and given to 7 different individuals in Western Canada. This is a monumental task when you consider the logistics of the testing of Shelley along with preparing the recipients, OR teams, transportation etc etc.
At 10:30 PM on Dec 5th we all said our tearful goodbyes to a wife, mother, daughter and sister.
Shelley's legacy lives on in the work she did on behalf of others throughout her life and the recipients of her very healthy organs.