When she caught her first look at the beasts, it had been out of the corner of her eye. In the time her head swiveled and she beheld them clearly, her feet were already pounding across the deck in a crashing sprint. For that precious time, there were no thoughts that filled her mind. Her body simply saw and reacted to a threat while her thought-cage still tried to make sense of it all. Luckily for her though, Vanessa was a deeply incurious woman, and so the sputtered, choking thoughts only lasted until she could decide how best to put the unnatural aberrations back in the ground.
Vanessa threw out her arm, trying to snag Anton as she passed him and bring him along with her towards the fore of the ship. "With me. Now." She said, the words coming out in a half-snarl. She would let him play hero. She would let him dictate where she flew her ship and for what purpose. She would not let him get in the way of his own protection. This whole damned expedition would mean nothing if he was not hale and hearty enough to take credit.
Digging into her coat pocket, she retrieved a handful of beeswax earplugs, and secured her own before offering the second to her charge. Skilled though she was, Vanessa did not want to risk herself a life spent guarding a man both blind and deaf. She did think to warn the others, tossing earplugs to both Iselya and Imogen and shouting. "Put them in if you value your hearing!" Though unlike with Anton, she did leave it up to them on whether they actually did value it.
Once at one the foremost cannon, Vanessa dug into her great pouch of ammunition and swung the barrel of the cannon upward so she could safely heave two handfuls of minor caster shells down the barrel and use a ramrod to pack them down tightly. She moved at her breakneck pace with mechanical confidence, these actions having been burned into her brain as a matter of survival. Just as well, since those befouling shrieks made thinking about anything a losing proposition. Even still, she felt that burdensome weight on her, but nevertheless brought the cannon level towards the center of the flock of pit-spawn.
Then Vanessa struck a match and let the her cannon roar in unfettered defiance. Countless caster shells howled death as they fanned out in all directions in a manner similar to a blunderbuss.
No sooner had arcane smoke cleared from the cannon's bore, and Vanessa was already reloading.