How naughty, so very terrible, such a waste of blood,at least she should try to stain her outfit in it and make it more beautiful.... Perhaps a little creepy? No...No never too creepy!
The human body contains about five liters of blood! You believe, one vampire can drink so much? And about outfit... I think, you are right, but she only started to eat, she has a lot of time to soil her clothes and her hair!