Doesn't matter if it's sunrise or sunset, she has just a few hours at max to wait, though she'll live if it's sunset, but turn to moon dust around noon if sunrise
Remilia should cast a shadow. Her feet are in the shadow but her head isn't. Or is this one of those vampire rules, that they never cast a shadow, just like they don't have a reflection. Also, her back is clearly illuminated, even the parts that should be in the shadow. What is going on here?