if they call the police they will take there allegations very seriously, a social worker will be allocated at the police station, they will take them to a place of safety irrespective of age or gender whilst the police investigate further. they already knows this and is probably the reason why they haven't responded to your simple question.

if they have tried already to contact the police or social services, teacher etc regarding this matter and they haven't believed them they would still have offered them temporary accommodation to remove the stressors of living with the person accused until more permanent accommodation could be provided, either way they would not still be living with the alleged abuser.