a 24 hour garage is a safe place after midnight for young teens?
I don't think a garage is a particularly dangerous environment for a group of teenagers, no, even after midnight. She's not what I'd call a young teen, she's 15 and Y11.
Honestly if I was at a late night garage at 1am and a group of teens were hanging out there
They go to the garage to buy snacks, not to hang out.
I don’t see why your daughter needs to be out all night anyway.
She's not out all night.
I’d wonder why they are so keen to be down on a deserted beach in the middle of the night.
I assume it's because beaches are nice places to be, and it's not deserted, there's a prom with restaurants, a cinema and people also live there. It's a busy place.
She comes home happy, sober, having had a good time with her friends. We live in a safe area. She's close to home. She's not out by herself. We know where she is and check in with her. I'm not trying to be contrary, I really can't see what's so controversial about it.