carnivorous woman; predatory woman; aggressive woman in romance
Colloquial term for a woman who actively pursues romantic or sexual relationships, often contrasted with 草食系男子 (herbivore man).
See also: 草食系男子 (そうしょくけいだんし)
She's a carnivorous woman; she actively approaches men she's interested in.
It's said that the number of aggressive women in romance has been increasing lately.