Perhaps, in the eyes of the Elf Race, this is not betrayal.
According to the alliance agreements made with the various races, the rights and obligations are limited to the Continent of Aslante. Once they leave this continent, all rights and obligations automatically disappear.
Sometimes ignorance is a kind of bliss.
The Orc High Levels, unaware of the Elf Race's desire to flee, based on the strategy of "sharing cold lips, sharing teeth," assumed that the Elf Race would fully support them.
If the Alpha Kingdom were to unify the Orc Prairie, the power balance between the two camps would not just be disrupted but would tilt entirely in favor of the Human Race.
At that point, even if the Anti-Human Alliance were to push their limits collectively, they could only struggle for a few more days; their demise would be only a matter of time.
...
"Report!"
"Urgent news from the rear: a group of rebels broke through the blockade line and entered the Sanctuary!
