Of the several collective nouns for a group of spiders, my favorite is "clutter." And it looks like Agrippina has this particular clutter pretty much conquered.
I'll point you again to the last week or so of "Animus," our 21st storyline, for the set-up to Agrippina and Regina Noctis here. We'll learn more, too, as the week progresses.
Twenty-Four - A Long, Long Trail A-Winding