Oh good, shiny things. "Definitely something of value in there. We're not just clearing out a threat for later."

She will wait and watch. If the hydra happens to roam into the visible part of the cave, she'll see it. If not, eventually Julen will return.

No hydra ever becomes visible to her.

Yanor finishes preparing his spells.

A little over thirty minutes later, Julen returns with a dead alligator lifted with both arms. It's clearly very heavy even for someone of his strength.

He sets it down and groans. "That was the only beast I could find that would interest a hydra. Heavy bastard."

"Looks like it should do. ...I will need assistance dragging it over there. You can get settled in and watching before I start the Sound. I will keep a Message connection active."

Julen will assist her in dragging it over there. It's easier with two people, although he's still doing most of the work.

She sets up the Message and waits, whispering along it to keep the connection open.

They set down the alligator carcass in front of the cave and Julen retreats back to their temporary camp. "Now."

Ghost Sound. Very quiet alligator noises for now, but escalating after the next ten seconds to an eventual (unmistakeable and very loud) death rattle.

And then she sprints in the other direction. By the time the noises should be audible to anything nearby, she's two hundred feet away, having gone a little past the telescope's position in her haste. She slows and creeps back in with the others, now doing her best to be quiet rather than fast.

A few moments later...

A huge six-headed hydra emerges from the cave and lumbers down to the alligator carcass. Three of the heads descend and begin tearing into it. The other three sweep the area near the cave.

"Six. ...We can handle six heads. Give it— half an hour to possibly drowse off? Tomas, correct me if my timing is wrong, I don't know hydras as well as you. Then we go in. We prepare with Yanor's Communal Resist Energy for fire, so the sixfold breath isn't fatal, and Invisibility  and Dazzling Blades for the two of you. I will begin with a Burst of Radiance to blind it, or one of you two can release a Blade in its eyes and I will Scream at it. Either way, we take it down fast."