The Only Use of

conscience
in
The Glass Castle

I usually gave homeless people whatever spare change I had, but I couldn't help feeling like I was trying to ease my conscience about Mom and Dad wandering the streets while I had a steady job and a warm room to come home to.†
p. 256.3

conscience = feeling or appraisal of having personally behaved in a morally right or wrong manner

Definition:

feeling or judgment of morally right or wrong personal behavior