It is my conclusion that Wendy died sometime around the beginning of March 1983.
Ridgway claimed to have killed her in spring or summer. Wendy’s PMI showed that she had been deceased prior to May. This obviously rules out summer. March, April, and May are the months of spring. May can be ruled out since Wendy was killed before that month. Investigators believe that she was killed shortly after arriving in Washington, which probably would’ve been too early to have been April.
Therefore, Wendy Marie Stephens lived from October 10, 1968 to circa March 1983.