This is how The Symbiote Queen's defeat goes in My Little Pony Transformers Bionicle: Rise of the Symbiotes.
[The Symbiote Queen uses her tentacles to bring Princess Celestia and Princess Luna to her]
Princess Celestia: What is the meaning of this?
Princess Luna: I can barely feel my hooves.
[The Symbiote Queen smiles evilly]
[The Symbiote Queen
[Tahu kills a Symbiote. The Symbiote Queen halves nearly take over Princess Celestia and Princess Luna's bodies when they both sense the death of one of their children]
Tahu: Oh, I'm sorry. Was that your son?
[The Symbiote Queen halves turn to face Tahu angrily]
Tahu: Then that means that's your daughter then too. [kills another Symbiote]
[Both Symbiote Queen halves drop Princess Celestia and Princess Luna and merge back into one and she angrily approaches Tahu]
Tahu: Well look at this. The Symbiote Queen has a soft spot. [kills another Symbiote]
[The Symbiote Queen growls]