can my daughter applies for the Family L that is valid for a year?

I am a filipino citizen, married to a chinese citizen, and have lived in Beijing for more than 5 years. My daughter who is under 18 came to visit me in Beijing, she was given and L which is valid for 30 days at the chinese embassy in Philippines. Hers is about to expires now, I am so worried that I can't extend her stay here. Thanks