She died alongside another compatriot of hers, Brazilian army veteran Douglas Burgio.

There are no details available yet about the attack from official sources.

Do Valle’s and Burgio’s family members say their battalion came under heavy Russian fire near Kharkiv on June 30.

“Thalita went to the bunker,” Do Valle’s brother Theo Rodrigo Vieira told The Daily Mail on July 6.

“There was already a fire and the bunker collapsed with her inside. Her friend returned to save her in the interval between the bombing and ended up dead. She died of asphyxiation; she wasn’t hit by shrapnel.”

According to Vieira, his sister left for Ukraine three weeks prior. “She said she’s going to Poland to work as an emergency worker, to help people leave the war-torn country,” he told Brazilian news outlet Folha do Sao Paolo.

Read more: yahoo