Questions about the metallic arts

Hi. Two questions I am mostly wondering if there's been an answer to or not in regards to Feruchemy and Hemalurgy.

1. Can you lock traumatic memories into a coppermind and essentially remove the trauma unless you tap it again, or does the emotional impact stay.

2. Does killing someone through a method such as beheading with the correct metal embedded inside them count for hemalurgy as long as the intent is to make a spike? Or does the potential spike need to be the killing weapon?