While emotional conflict is important, it needs to occur within a framework. The external conflict- also known as "plot"- is that framework. The plot moves the story along, while giving the emotional journey context.
- Is the timeline accurate and believable?
- Is the conflict introduced early in the book?
- Is it caused by forces outside the hero/heroine's control?
- Is it a single even that can be solved in one step (bad)?
- Do the hero/heroine have a good reason to stick around?