I love all the comments about water on various pictures of the Scarlets around here, as if vampires are made of cotton candy or some other easily dissolved substance. The myth is that they can't cross flowing water, i.e., a river or stream, without help (and even then, they're fine if they're carried across--it seems to be a psychological block more than a physical limitation), not that they disintegrate if they get wet or something. It has nothing to do with, say, bathing, or sitting in a kiddie pool, or even swimming in a lake or what have you. Even with the hose in play here, she's fine--she's not trying to cross anything, she's just sitting there.
(As for sunlight, well, Remilia's no Count Orlock. Thankfully. :)