Eva swims out with her, transformed, taking powerful strokes with her hands and feet. She is, for some completely mysterious reason, suddenly wearing a bikini top and swim skirt. 

She stops at the kelp, grabs a handful, and strains to snap it over her knee.

Which is precisely when a whole school of sirens, encrusted with barnacles on their sea-green bodies, swim out of the depths of the kelp forest and start closing fast.

Hailey scowls. They haven't started singing yet, but they probably will. Better to have a bit of separation between her and Eva when she starts getting zappy, and hope the combination of her powers trying to guide the electricity and the greater distance to Eva will make it mostly hit the sirens.

She swims closer to the oncoming threat, and then lashes out with lightning as soon as she it feels like she's in range.

The sirens startle as some of their number fall, and start singing. Their voices are sweet and ethereal and fill everyone who hears them with longing.

Oh... That sounds very nice...

Eva starts drifting towards the sirens with a look of vague bliss on her face.

Her cheeks flush. That does sound nice. She swims a bit closer.

Wasn't she doing something? Right, she was zapping these sexy fish ladies.

...Why?

Doesn't matter, s'hot to see them flinch and twitch as she electrocutes them, so keep at it.

She ramps up the lightning.

The pulse of electricity flashes through the water, burning and disorienting the Sirens —

— and Eva swims directly into it, a blissful look on her face —

And then gasps a curse into the water as she's burnt and electrocuted. 

She takes a gasp of water, doesn't drown, and starts swimming away from the sirens as fast as she can.

Oooh, that's fun to see. She swims closer to the disoriented sirens. Pity about the barnacles, those kind of detract, but it's still fun to see them fry.

Wait, these are a threat. Yeah, she still endorses her actions, just not quite why she was doing them.

She keeps swimming closer, ramping up the shock further. You do not get to threaten her, her headmates, and their new friend. Not allowed. Please promptly fucking die, sirens.

More sirens die, and the rest scatter into the kelp forest, fleeing the lightning.

Eva growls and snaps off the kelp she was working on, and starts slowly swimming back toward the ship.

She glares at the departing sirens, then swims back to help Eva haul, her head still on a swivel in case the sirens come back, or a new school shows up.

Eva hauls her way back into the craft and thwaps the sodden kelp onto the floor before collapsing onto all fours. 

"Fuck," she swears.

Hailey nods and scowls. "Fuck." She takes a breath, then—

Sable switches in, and kneels down beside Eva, a gentle hand squeezing her shoulder. "Hey. You did great out there. It was a fucking mess, but you handled it. Need a hug?"

She prods her side and hisses in pain. "I think... I would've died there if not for the magical girl form. As it is..."

She coughs up a little blood. 

"Surface? The stars —"

She nods firmly, standing. "I'll be back to help you up while we're surfacing." And then she's off.

She sprints through the hold, down the junction, and into the engine, hopping into the seat. Brakes unlocked, twist the attitude orb back pitch the pseudo-tracks up, and ramp the throttle gradually up to full.

The train steadily picks up speed, churning through the water toward the surface.

Okay, path is clear all the way up, she has a few minutes to help Eva before she has to level back out and park again.

Back to the hold she runs.

Eva manages to get herself into a sitting position against the hull. There's pain inside her, all the way from her left shoulder down to her left thigh. The bolt seems to have missed her heart, for which she's not sure whether to be grateful or annoyed. She's not sure she likes these memories. They kind of hurt.

Sable frowns at the sight of her, shaking her head. "I'm sorry, Eva. That's gotta hurt." She crouches down beside her.

"Want a lift to up to the lounge, rest on a sofa up there, and be closer to an aft balcony where you can get a view of the sky once we're on the surface?"

"Please. Talking hurts."

She leans forward, slips her arms under Eva's shoulders and knees, and scoops her into a princess carry, lifting her gently as she straightens back up. "Hup."

Eva flushes. She's lighter in this form, evidently. Has she lost height...? 

Her side twinges and she closes her eyes with a wince.

Sable cradles Eva gently to her chest, her cheeks flushed as well, and carefully carries her out of the hold, turning to slip through the door, then up the stairs. She does her best not to jostle her, making her way through the center door on the upper level. That car turns out to be a surprisingly spacious lounge, for a train car, with couches and chairs and tables and cabinets with transparent doors that look like they might be bookshelves. She continues down the lounge, stopping at a plush-looking sofa all the way at the far end, right by the aft door. Then she gently lowers Eva onto the sofa.

"How's that?"