The posted coordinates will take you to a marker for Maggie Wortham, it is a tall marble marker, find the last two numbers from the year that she was born and use them to fill in the xx's in the following coordinates; N 31 36.7xx W 097 11.758 and this will take you to the final container location.
This is an interesting old cemetery with a lot of early McLennan County history, it is worth spending some time walking around and reading the stones and seeing all of the names and the dates.
The container is a painted soda bottle pre-form zipped in a tree.