How long have you had her? How long since she last ate? Have you tried making it so she can't see the males?
Bettas can o a few days without eating and if she's still active I wouldn't worry much. Eventually she'll get hungry and the food will be more important than the pretty boys next door.
Bettas can o a few days without eating and if she's still active I wouldn't worry much. Eventually she'll get hungry and the food will be more important than the pretty boys next door.