This is the 18006th most frequent Russian word.
финалисткой
"Финалисткой" means "female finalist" in English.
In this sentence, 'финалисткой' is used to indicate that the person is a female finalist of the competition, emphasizing the role.
Она стала финалисткой конкурса талантов.
She became the finalist of the talent competition.
Here, 'финалисткой' is used to specify her role as a female finalist, showing entitlement to privileges.
Как финалисткой, ей предоставили дополнительное время для выступления.
As a finalist, she was given additional time for her performance.
This usage of 'финалисткой' emphasizes the title or status of her achieving the finalist position as a woman.