Thirded. She's coolheaded (and thus not likely to freak out and get everyone killed, or hide an infected wound), VERY easy on the eyes and can chop zombies like the best.
Considering the nature of this manga, the white blood splashes reminds me of something entirely different...
Considering its Saeko it's pretty easy to assume that white splashes would be all over the place considering how wild the 'exercise' that might have taken place before that.
Of course, slightly older red splashes might be spread around along with white splashes with undead bodies lying all over the place.
