How do you calibrate how much guidance you give an LTR when it comes to boundaries?

Answer: I'm torn between saying as the man it is your responsibility if/when she is about to cross a line by reminding her of said boundaries while simultaneously holding head space for the idea you should let her act out her wishes and react accordingly.

I can go further on the second line of thinking by saying eventually her true nature will win out when one of these times, you aren't there to give her a gentle reminder.