It's horrific. :(

At first glance there are at least two others from this year that I know of:

Mira (5 Apr 2020 - Cilincing, Jakarta Utara, Indonesia)

https://tdor.translivesmatter.info/reports/2020/04/05/mira_cilincing-jakarta-utara-indonesia_fc5ff0c1

Vicky dos Santos (28 May 2020 - Itu, São Paulo, Brazil)

https://tdor.translivesmatter.info/reports/2020/05/28/vicky-dos-santos_itu-sao-paulo-brazil_88dc3842

The latter case was very heavily reported in the Brazilian press.

Altogether I can see nearly 60 cases reported with the keywords "burnt" or "burned" in the TDoR cause of death data, but I imagine that's a significant underestimate.

https://tdor.translivesmatter.info/reports?from=1901-10-01&to=2099-09-30&country=all&category=all&view=thumbnails&filter=burned

https://tdor.translivesmatter.info/reports?from=1901-10-01&to=2020-09-30&country=all&category=all&view=list&filter=burnt