Ah... so you thought it best to give them some space and privacy. [still, it seems rather invasive, but it's not Ava's place to criticize the arrangements when it sounds as if Helena has found one that suits her quite well.]

I think... knowing magic from books might actually be an advantage. The Captain seems to take inspiration from media. Books and movies. There might be a basis for how things work taken from another source. But yes, it sounds like those sigils were extremely important and powerful. Which makes it... all the more strange that Crabb was capable of simply smudging them away.

The video I tried taking of the spirit summoned in the bar... had magical interference as well. Much like when anyone attempts to take a photograph of the Captain. Doesn't work.