Tatiana is from a visual novel called Blood in Roses.

Tatiana was a human born with magical abilities, making her a well established and powerful witch. It was said that she was one of the most powerful witches in both history, and her lineage. Tatiana had no children of her own due to her passing, but had a sister who did have children. All females born from Tatiana's bloodline inherit the abilities Tatiana once had. Tatiana is the ancestor of Cecelia Valor, the protagonist of Blood In Roses. 

Tatiana has a very kind and gentle heart. She is also very understanding and forgiving. In both of the spin-off endings, she accepts her fate and forgives the villagers for burning her at the stake. Tatiana is also a very wise woman who is capable of protecting herself. She does not give in to fear easily, and will face it head on. When Harold tries to push her around, she fights back, forcing him to give in to her demands. She isn't afraid to speak her mind either. 

Voice: Her voice is pretty much up to interpretation, however, we would like for her to remain in the high to mid-deep range