Dd is 15 (Year 11), she's on the autistic spectrum. We've had some problems in the past year with anxiety and erratic school attendance for a bit of background.
She has become very possessive about her bedroom and we have respected her privacy. I always knock, often she just says 'no' so I leave and phone or WhatsApp her. On the odd occasion I have knocked and not heard a response, I open the door ajar and she goes mad, I'm invading her privacy etc.
I was talking to some friends last night with similar aged girls and they said they reserve the right to enter teens' rooms because a) they are minors, and b) it's our house.
Have I made a rod for my own back?