Diamonds, it's exactly the same here, she wakes up no problem every mornin but by 9.30 she's fucked and needs her bed, can't stay awake.
Ran, interesting about the gas but pretty sure there's no leak. I could b over workin but have been like this for as long as I can remember, even at school and generally I'm not tired when I go to bed at 11ish, it's just cos it's gettin late.