While the thought of staying longer occurred to everyone, the group found that they had a lot more to do that what they had realized.
Just off of the dangers that the elven territory faced, they knew that there was a high chance the dwarves would be in the same, if not worse, situation. The blood moon cult was making moves against everyone at the same time.
The fact that they had more than sent a group of monsters at the elves was just a fact of it. They had even used the humans they captured after destroying two entire cities to do it. That simple fact, was why the group worried that they should have split up to handle the risks of the blood moon cultists.
The dwarves might be tougher in a sense, but they were also at risk here. The blood moon cutlists were not fighting in any basic way. They were conniving and cruel. They were abusing those that they captured.forcing them to become their weapons. Mindless and tortured weapons.
Creation is hard, cheer me up!