Veronica and Sashia said nothing as they follow Jen letting her use her powers to find Phermosa.
Phermosa heard Jen speak but did not answer her, but there would be a powerful pink aura drifting from the back of the Cavern, the wild Pokemon they passed seemed to have lost the will to fight as they just stayed hidden not even appearing to fight the group, even Jen own Pokemon outside there pokeball, would be unable to fight. It seems this aura That Phermosa gave off prevented Pokemon from attacking Phermosa. But at the same time, it seemed she was waiting for them.
By the time, the group would get to her location, Phermosa would be sitting atop the Z crystal shrine, the moment they would approach was when she struck immediately going in to take out Jen who she saw as the first threat, but Veronica quickly moved in the way and blocked the attack.