From episode 20, during the final air hockey match. Mylandah glares over at Lahrri playing in the next court and thinks back again to the scene of her betrayal. SPOILERS in the next paragraph....

This match demonstrated the value of friendship. Kris and Akari were able to fight back from near defeat because they knew that they were together, and so everything would be OK. Lahrri and Mylandah, on the other hand, had to fight their demons alone. Akari's smile and startling talent unnerved Lahrri, and Lahrri's slip from perfection unnerved Mylandah, and so, separately, they went down.