Teba does an admirable job of attracting all of Vah Medoh's attention. 

Link lines up her bow and looses a shot at the first cannon. The bomb arrow sizzles as it arc though the air, and impacts with a visible dent to the cannon.

She looses another one as Vah Medoh fires a beam towards Teba. "It's working!"

"It looks like it. Tell me if I should teleport us and where."

She waves and points for Teba. "To the next cannon!"

This one blows up fine too. Rinse and repeat. Vah Medoh doesn't have any more surprises for them.

The shimmering red barrier falls, and Vah Medoh lets out a pained sound like some kind of giant robot animal.

"That went well." Alice glides down to land on the top of Van Medoh.

"Well, well, well. Link, you missed your appointment by ninety nine years and three hundred fifty one days! Better late than never, eh?"

"...Revali! You're... Alive?"

"Not quite. Ganon ambushed me most dishonorably. Killed me from behind. Perhaps something about being the Beast's pilot kept me almost here. Perhaps it's merely my sheer willpower."

"Oh, Hylia... Do you think the other Champions are...?"

"No clue, and this isn't the time to mope. You don't even have the darkness-sealing sword. But maybe you'll be able to cleanse Vah Medoh anyway. I'd offer you my help, but, well..." He swipes one arm into Link. It passes right through. "Your friends look like strong warriors, but don't get overconfident. You're still not as good in the air as I was."

"Right... Right. I have to take back Vah Medoh." She looks - really shaken, though.

(Teba shakes his head and says something about going back down. He doesn't feel good enough about his skills to meet a legendary hero. And besides, he took a grazing hit.)

"Hello. I'm Alice. It's good to meet you. Hopefully we'll be able to handle this quickly. I'm not sure what we can do for you but at the least I expect we can find people from the village willing to keep you company. It must be lonely being up here."

"You needn't bother. My heart's burning desire is the utter destruction of Ganon. Just do that and I'll be peachy."

"I'm trying. Ripping Vah Medoh from Ganon's grasp is one step along that path."

"Let's get to it then. What do we need to do?"

"Touch the Sheikah Slate to each of six terminals inside Vah Medoh. And then, well, you'll need to fight the shard of Ganon that killed me, the greatest of all Rito warriors. I do hope you're prepared."

"Alice, I think you're going to be a big help here for some reason."

"I think that's a fair guess. Where's the first one?"

"Down the stairs, across the main hall, there's a guidance stone like the ones in the towers. Good luck!" And Revali fades into air.

"Wait - Revali..."

Link whispers something under her breath. Then shakes her head. "Let's go kill a piece of Ganon, yeah?"

"Sounds like a plan." Alice starts walking. "If it's going to be a fight I can protect us from ranged attacks to a degree but I don't really have a defense against melee except teleporting away."

Link leads the way into the interior of the Divine Beast. There are treasure chests here and there, and puzzles of some kind that don't seem to serve a functional purpose. Plus some Malice infestation and a couple of monsters. But Alice's teleporting takes them right past all the puzzles. Revali's voice jokingly chastises them for cheating from thin air once.

"Winning is more important." Alice quips back.

"Fair point."

Soon enough, "That's the last terminal. Now go back to the top, and get ready for a hard fight..."

"Do you feel ready Link?"

"Damn right I'm ready. Let's do this thing!"

"Try to activate the control terminal and Windblight Ganon will reveal himself," Revali instructs. "He's fast and he has good aim. You two, don't get complacent!"

Link approaches the terminal with her Slate, but as predicted a roiling mass of black power shot through with streams of blue magic slowly emerges from the console. It settles into a flying inhuman form at least twenty feet high.

Windblight Ganon roars and Link immediately has to dodge a stream of blue projectiles from what looks like an arm-cannon.

Alice takes cover but keeps careful watch over the fight. She activates her laser and fires it at the construct's prominent eye.

Link gets hit once and yelps, but doesn't seem overly harmed.

The eye is pretty clearly a vulnerability! It gives out a screech and falls to the ground, allowing Link to charge in swinging with a vicious-looking sword.

When it recovers after a few seconds, it shakes Link off and generates a series of oddly cohesive tornadoes that track and pursue both Link and Alice.

The tornados are disrupted by large mirrored spheres which disappear after a couple seconds. Alice fires at the eye again.

The tornados are successfully disrupted, though it is kind of time-consuming.

The monster's shriveled black off-hand starts shielding his eye from Alice's view when it recovers this time, and goes after Alice directly, dissolving into a blue ball of energy and shooting at her after reforming closer by.

Link takes the chance to bring out her bow and start putting arrows into it while it's distracted.

Alice makes bobbles appear in the air to shield her from one of the shots while dodging the rest. She fires directly up the cannon's barrel. Then she teleports to the side.