Yata

Everytime I read this line:

"“I named you, Spook,” Kelsier whispered. “You were my friend. Isn’t that enough?”"

I really feel it, there is power in this simple line, I don't understand the reason but I feel it powerful in my mind

Kelsier is quite the Cosmere's Kratos XD

I don't want to disprove this theory, but I think it may be relevant.

It's possible that Shallan can't really interact with Crew's Cognitive Shadows just because she is only projected in the Cognitive and she is not fully in the Cognitive.

If I don't remember wrong there are references to some differences with her teacher's delete scene.

The Anti-Stick rules 

PS: I have to thank you, I am listening your readings to improve my English's Listening... Very useful and very weird to hear how a native language's reader pronunces the name of characters ;-)