The reason I ask is that prior to having our nanny we used a local babysitter (for occasional evening babysitting) and is cheaper than our nanny's hourly rate. It would feel a bit odd having the babysitter turning up before our nanny went home but at the same time if I use our nanny (who is willing to do babysitting) at her day rate our evenings out will be much more expensive. Has anyone got any experience?