I think she'd be the kind of vampire that just doesn't particularly like sunlight. Kinda like a True Ancestor (similar to Arcueid) or like Evangeline, from Negima.
Though of course, it's all depends on what the artist/fan thinks... Personally, I think this version suits most tastes better!
In one series it said she wears sunblock (Remilia Scarlet Runaway) so she can go out in the sun without an umbrella, not sure how many other series has her doing the same thing.