convince her
Me resultó difícil convencerla.
It was difficult to convince her.
Good luck convincing her.
It took me a while to convince her.
Él intentó en vano convencerla de su inocencia.
He tried in vain to convince her of his innocence.
Ojalá puedo convencerla de que cambie de opinión.
I hope I can convince her to change her mind.
They couldn't convince her.