Fuck Goblina
From Create Your Own Story
Your dragon penis crushes her to death. She does splat under your dick.
What now?
You need more power.
The princess you have prisoner could give you leverage over her Kingdom.
If you aren't so confident about this, you took make the foreign merchants that travel to the kingdom pay you a toll.
Alternatively, your goblins can take a nearby village, gaining you more followers.