When Harker started to feed on her, Victoria did put up a fight for a while, accelerating the freezing process on Harker.
But Harker's determination somehow overpassed hers. And he knows just how much willpower Victoria had. She will lose only when she chooses to lose, or caught off guard by tricks and cheating. That was what happened when 'Joan' defeated her, and that's what's happening right now.
Harker wasn't beating her fair and square. But it didn't matter now, as he needed to hurry up in consuming her.
Thanks to his bigger Absorption Limit, he can still consume a Legion-like entity that was made of so many cells of other individuals. Harker gnawed on her arms, her abdomen, going in all directions like a rabid dog that lost its marbles.
Victoria stopped looking for the Shard for a moment, to speak in almost a mocking way.
"Ah, how fitting. Being consumed by men once again."