Also, the spider queen detecting even one party member will often lead to her attacking the full party. She's just about broken in every way (and the camera kept getting stuck on the floor 🙄). I had to thunderwave her onto my paladins because she decided to creepily stare at my hidden 3 members for the rest of eternity.
Consequently, I've unfortunately been unable to test shooting the web while hidden. Either she kills Astarion without entering combat, falls as intended but attacks everyone (for some reason the spiders also get a whole free turn in this case, making it extremely unviable). Or... she gets stuck staring at me on stone ground. That only leaves destroying the eggs and then pushing her off the platform through some method.