Human remains on National Grid Property- who was the Jane Doe found in Everett, Massachusetts, in 2016?

Sources

https://www.namus.gov/UnidentifiedPersons/Case#/15471

https://www.bostonglobe.com/metro/2016/07/28/more-remains-found-national-grid-site-everett/PdPCUPTr47uV8aTfnb41QJ/story.html

https://www.necn.com/news/local/massachusetts/everett-massachusetts-reported-human-remains-national-grid-property/148606/

https://www.necn.com/news/local/massachusetts/human-skull-found-on-national-grid-property-in-everett-massachusetts/51490/

https://boston.cbslocal.com/2016/07/07/human-skull-found-everett-national-grid/

https://everettindependent.com/2016/07/16/da-calls-human-skeleton-find-in-everett-a-suspicious-death/

https://everettindependent.com/2016/07/30/da-ryan-makes-renewed-call-for-help-to-id-female-victim/

On July 7th, 2016, National Grid workers uncovered a human skull while moving dirt on an area of an Everett property used as "a staging for fill." The Namus database provides scant details on the case, and it seems that updates notable to news agencies dropped off within a month of the body being discovered. Items linked to the victim include :

" 1 pair socks, 1 long sleeve jersey, 1 pair sweatpants size small brand "Cocoa est. The body was reportedly found "within 300 feet" of the casino construction site. News sources suggests that the victim was placed at the site after her death. By the end of July, news sources drop off, and the case seems to go cold.