I have not found any news updates but I did find an obituary for her.
https://www.legacy.com/obituaries/newsobserver/obituary.aspx?n=olivia-catherine-zane&pid=198003390
That is odd, did they find her and not release the information? It usually takes quite a long time for missing people to be declared deceased without evidence. It reads like possibly self-harm. May she rest in peace.