The Function of Forsythia suspensa in The Legend of White Snake

Forsythia, I feel that she is a misguided person with a conscience. She was originally a victim: her father abandoned her mother and daughter when she was young, which was a great psychological blow to a child. When I grow up, my sweetheart gives up on herself, and the person I love loves someone else's husband. When she felt depressed and lonely, she met Fahai again. What really led her astray was Fahai.