Ii'm in alberta. As far as I know there aren't quiet time laws here.
So... today I put dcg in her own room, not darkened, with books no blanket, and said "you don't have to sleep just look at books quietly" (i never say they HAVE to sleep)".
Checked on her a short time later and she was snoozing up a storm. I woke her and she looked all guilty and said "I wasn't sleeping I was just closing my eyes!" Poor kid.
Meeting with mom after last dck leaves. Shoyld be interesting. Thanks for all your advice and input! I'll update on the outcome.