Thank you - it's nice to read all your experiences. Sounds like a bed light is in order. She does not self regulate well at all, but I don't think I'm going to be able to stop her from reading by the constellation nightlight.
She reads in the morning too, and reads when brushing teeth, in the bath, walking in the grocery store, pretty much all the time when she isn't doing something with family. She wasn't a particulary early reader so at first we let her read whenever but it's getting ridiculous. It takes her an hour to eat her meal, and she can't hear me when she's engrossed but boy it's nice to get a respite from the constant talking and needing interaction/stimulation!
And yes, I used to read under the covers too!