Thya is one of the family members in Evil Dead Burn —specifically, the character played by Luciane Buchanan. The available plot descriptions identify her as part of the in-laws gathered at the secluded family home, but they do not clearly spell out her exact relationship label in the family tree.

Quick Scoop

Based on the current cast and synopsis, Thya appears to be a close in-law within Alice’s husband’s family rather than Alice herself or a separate outsider. In other words, she’s part of the family that gets trapped in the “reunion from hell” setup when the Deadites start taking over.

What’s known

  • Luciane Buchanan plays Thya.
  • The story centers on Alice visiting her husband’s in-laws after his funeral.
  • The family gathering turns into a supernatural disaster as members become Deadites one by one.

What’s not confirmed

The publicly available plot summaries I found do not give Thya a precise label like sister, sister-in-law, or cousin. So the safest answer is that she is a member of the husband’s family, but her exact relationship to the other characters hasn’t been clearly published yet.

TL;DR

Thya is a family member in Alice’s husband’s side of the family, played by Luciane Buchanan, but her exact role in the family hasn’t been officially clarified in the available summaries.