CousinOfTanavast

I got the feeling that all shards could do both of those, and that Preservation couldn’t talk with Ruin’s hand over its mouth, and Ruin couldn’t hear with Preservation’s hands over its ears. I’m not sure of evidence for that interpretation, though.

She is not a Lightweaver, so she doesn’t need to deal with reality. (But as a fictional character, yeah, she does need to deal with reality sooner or later )