I think before you hire the yaya, mommies, us parents should really look or rather dig deep sa background ng future nanny. Nbi or police clearance lahat naman pwede makuha, verify.nyo yung info sa biodata nya, call the previous employers, asked nyo yung mga dati nyang inalagaan. Sounds like a lot of hassle, pero this is for your child's safety.
Magbasa pa