I'd say the morning routine is your fix. If you guys are in bed from 6-10:30, then she's made that part of her night time. So her "night" sleeping block is midnight to 10:30. To fix it, wake her earlier, half an hour at a time. So the first day you'll wake her at 10am, then put her to bed at 11;30. Next day, up at 9;30, bed at 11. Keep going until you get to a night time block that suits you.