Michiru gives Hotaru a light squeeze about the shoulders. She might have said something, but she's too busy reaching out to grab Haruka's arm.

"If we're going to talk to it..." Her Warp Band glows, and her Gardevoir appears. Usually unflappable, Gardevoir stares wide eyed at Heatran, and then shrinks closer to Michiru.

Michiru holds Gardevoir's gaze for a long moment, until the Pokemon gives a shaky nod. There. Now they have Teleport at the ready if Heatran objects with lava or something.

Mission or not, Michiru's priority is to keep them alive. For the most part.