You shouldn't trust strangers.
Sara is returning to work after maternity leave and needs to find a nanny to take care of her infant.
Sara wants to find a caretaker for her child.
Sara interviews numerous candidates, checks their references and makes sure they have CPR training.
Sara puts an ad in the paper for a babysitter and hires the first one she interviews, that doesn't have experience.
The babysitter is a positive influence and caretaker of the child and Sara is able to work without any concern for her child's safety.
The babysitter ends up neglecting her child, and she has to take off work again to replace her.