We have a babysitter booked for Friday night. She's the girl from three doors down and over the course of the past year has sat somewhere between 5-10 times.
She's just texted me to ask if he boyfriend can come over after she puts our DDs (1&3) to bed. My gut instinct says no but I can't put my finger on why. I guess older DD might hear his voice and/or be confused if she came down. DH isn't keen on having a stranger in our house in our absence but wants to sleep on it. It's not like we don't trust her, but it seems her two older sisters are quite goody two shoes and she's the one we spot smoking five steps around the corner from the house thinking her parents won't catch her.
WWYD? Is it unreasonable to say no? Do I need to tell her why?