This is the 5571st most frequent Russian word.
посвятила
"Посвятила" means "dedicated" or "devoted" (feminine, past tense).
The word 'посвятила' is used here to indicate the act of dedicating oneself deliberately and wholeheartedly toward an endeavor or cause.
Она посвятила всю свою жизнь помощи другим.
She dedicated her entire life to helping others.
In this case, 'посвятила' refers to allocating time or effort consciously to a particular activity.
Она посвятила этот вечер чтению книги.
She dedicated this evening to reading a book.
Here, 'посвятила' is used in the context of formally honoring someone through a work or gesture.