In the form of a bat, you could overtake victims more efficiently. Ah, quite true. Your instincts serve you well, my dear. We must leave this place soon. You must never stay in one place for long - the local herd tends to notice when its members are picked off.
Northern lands are preferable, because the nights are longer and the days shorter.
Also, the people tend to be spread out more, which makes hunting them easier. There were indeed a lot of new things - and terrible things. If she had somehow been asked beforehand what she thought of never being able to feel the sun's rays again, Victoria never would have guessed that she'd miss it so much. She learned to get over the drinking of others' blood, and it wasn't long before she simply took it for granted, much as she'd partaken of wine in her previous life. Of course, she would never again be able to see her family - in fact, she and Vladmir left Homburg only a few days later.