Your previous action was right...you told the person yourself about the non availability of the male member at the time...

But I concluded that you didn’t clear the right situation to him...you said,
Come after 6:00 pm... & 7:30pm is also after 6:00pm

but at the end you made a silly mistake...
Why did you send your daughter to a stranger?

In your presence there is no way to push your daughter to face or handle any problem.