Faluel didn't trust the Eldritches enough to share with them the knowledge she gained from the secret Tyrant's bloodline legacy, but she could use it along with her expertise as a skilled Forgemaster to give tips and hints to Bytra.
'I hate to admit it, but even with my mother's help grasping the technology devised by generations of Tyrants on our own would take too long.' The Hydra thought. 'If I can't get to have the Harmonizers mass-produced by the time the situation in Jiera stabilizes, the monsters and the Council will go to war.
'On top of that, I need the resources of the Council to Forgemaster enough Harmonizers for everyone. Without its help, I would end up squandering my own bloodline legacy.'
Truth be told, Fyrwal had agreed to help her daughter only because her studies on Ufyl's life force had come to a dead end. He was the only Hydra to have ever evolved into a Dragon, even though only thanks to the Ambrosia and Thrud's Madness.
