Aside from the bad language - the quote is true. When abused by an NPD parent or spouse, they make you feel as though you aren't worth anything good or nice - so when someone is nice to you, or giving, you can't help but wonder how much of your soul they want.
Narcs make deplorably bad parents.They are too focused on themselves to find children anything but an annoyance or a way to increase admiration and power. They view and treat their children only as extensions or reflections of themselves seeing them the way an advertiser sees a sign by the side of the road - as something to put their name on and use to build themselves up. Narcs deny their children's existence by insisting their children be and do what THEY want.