"We've got company, coming fast, from ahead, through walls and flooring. Hundreds of tiny feet."
She then tries to pinpoint the source, (taking 10 for auto 12 result) and prepares to meet whatever comes their way. She has a single dagger out, dark in color. (Cold Iron Dagger)
The scorpion raises its claws, in a menacing way to the north, emphasizing his alertness and waits, ready to spring into action. (Ready action to clamber up Bellas back, resting on her pack... don't want him in the fray if it comes to it.)