My values, transposed into the position of a vampire in Luminosiverse, yes. I would be a predator, choosing among prey of two species that are not my own. There isn't anything magical about humanity and there is real value in maintaining a whole species. Particularly something as awesome as wolves. More so in a universe in which the species has magical significance.

As I mentioned, I'd eat someone's pet cat instead. But if it came down to a pure choice between eating wolves to extinction or eating a human then vampire wedrifid would eat a human.

Ultimately, if you bite the bullet on "Shut up and Multiply" then it turns out that you have to Shut up and Divide as well. A single human just isn't worth six billion times as much as the wolf species. In Bella's case she isn't doing a whole species worth of damage in one feed (which is, of course, hard to imagine) so the multiplicative factor isn't quite so large. But even so, her choice isn't a good one. Particularly given the ridiculous number of alternatives she had available.

Bella also can't be expected to Shut up and Multiply. If she follows in the author's footsteps she does not even implement consequentialism. But Bella's reasons for behaving unethically are not important.