I made up a map showing the travel of the Little Cottonwood Creek all the way over to the Jordan river.
The map starts at her condo, winds along and shows the path of Cottonwood Creek until it joins with the Jordan.
At the Jordan River, the icons go North to the approximate area where she was found.
A rough scale of the map indicates the distance of Little Cottonwood Creek to where it matches up is about 2 1/4 to 2 1/2 miles.
From the Jordan River north to where she was found, scales about 2 1/2 miles. Overall distance from her condo- about 5 miles (+-) walking distance.
You can zoom the window in and out with the center wheel on your mouse. You will see how Cottonwood Creek zig-zags all over the place on it's way over to meet the Jordan River.
As you can see, it is quite a long distance, leaving me to wonder if maybe she walked for a good ways along Cottonwood creek the day she disappeared.
I don't know the exact location her body was discovered, but marked a major intersection of the river and highway somewhere around
3300 south 1200 West. which is the correct area according to news reports.
It seems almost incomprehensible that her body could have drifted that far with all the twists and turns along that creek, but it has been over two months since she disappeared, and there was plenty of rain to keep the creek bed full and flowing.
https://www.google.com/maps/d/edit?mid=zZ5px4sAbxvs.ktju4_PK9o6k