Alisa Dmitrijeva - Missing Aug 31st, Found Dead on the queens Sandringham Estate

This girls body was found decomposing & naked on the queens Sandringham Estate New Years Day 2015. No-one was ever charged.
According to the internets, she was reported missing on Aug 31st.
This article says "end of August". If this girl went missing on Aug 31st, she went missing on the day Diana was murdered in Paris.
https://www.itv.com/news/anglia/2014-09-15/inquest-into-death-of-latvian-teenager-found-on-royal-estate