In light of her dying at age 45, she played the voice of Tess in the video game The Last of US, which was recently made into an HBO show.
45, 9th triangular number
Ritual = 45
Tess = 9
And notice, she died 14 days after the release of the show.
Dead = 14
End = 14
Her death also came 149 days after the release of the latest video game in the series.
Annie Wersching = 149