Dooming themselves? If a spider could bark a laugh she would but alas there was nothing but a light chuckle. "I believe you are the one in a web, Headmistress." Who was the doomed one here? Soon her children would feast on not only these caught in there intricately woven web but those she'd gotten word of as being locked away in a secure place until they were ready to collect.

Perfectly at her leisure, the acromantula stretched her long legs, crossing the clearing with that elegant little strut she possessed. "We've minded our own business long enough but that has not stopped you humans from wondering into our presence, desecrating our forest as you go. Your kind doesn't understand boundaries. Your kind is known for tresspassing and it is your kind that is responsible for the death of my mate."

She had had this attack in mind from the very moment she caught sight of the lifeless corpse of her greatest love and Hogwarts was no longer in her good graces.

"It is our turn to tresspass." She hissed, the pent up anger escaping her pincers in much the same way the built up venom now was. It was enough that she could taste it. "Go forth my children; take the castle, it is ours. Go forth and devour as many as you like." The mother watched, a contented glow in her dark eyes as a large portion of her children scampered off back toward the forest.