I read it more like her morals prevented her from keeping/selling it, not that some outside entity was preventing her from keeping it. I sometimes say "I can't

I read it more like her morals prevented her from keeping/selling it, not that some outside entity was preventing her from keeping it. I sometimes say "I can't have that" to a food item I'm physically capable of eating but my moral framework precludes me from eating. My reading might be wrong.