Hiya Laofa,
i had this problem too, and I think now, the reason of this glitch belongs to the game mechanics, called "drop chance".
Not every killed Mob (here a Goari Queen) will drop an egg. According to the fact, that with this mission the Goari Queen is called by breaking the termite mounds as a mission step, in this case all spawned Goari Queens should drop, otherwise the Mission has to be started again, and again, and again, until one of the spawned Goari Queens will make you the gift of an egg.
@Apotheus
If you mean the Quest "Mud for the Bathing House" (translated from my german interface, might no the original english mission title) - they really need Q50 "choice mud" from Oflovaks Oasis. The Foraring skill has to be 50, to solve this mission.
i had this problem too, and I think now, the reason of this glitch belongs to the game mechanics, called "drop chance".
Not every killed Mob (here a Goari Queen) will drop an egg. According to the fact, that with this mission the Goari Queen is called by breaking the termite mounds as a mission step, in this case all spawned Goari Queens should drop, otherwise the Mission has to be started again, and again, and again, until one of the spawned Goari Queens will make you the gift of an egg.
@Apotheus
If you mean the Quest "Mud for the Bathing House" (translated from my german interface, might no the original english mission title) - they really need Q50 "choice mud" from Oflovaks Oasis. The Foraring skill has to be 50, to solve this mission.