You've made it to street level, and are doing your damnedest to try and save innocent lives from the rampaging Garigarius plant-monsters. Ruby's pretty much useless right now, so you and Mizore are stuck busting your asses to fight them off.
Fortunately, Mizore's cold powers work wonders at slowing them down and killing them, and you quickly discovered that it's really easy to use Hamon to overpressurize the fluid in their bodies and make them explode into little chunks of green salsa. Before long, you were able to manage it in one punch.
...it gets the job done, but damn if it isn't one messy pain in the ass....
Mizore smirks, suddenly. You gonna be mad if I say it?
You immediately realize what she's thinking, and scowl at her for it. Not the time for that, Mizore.
"Oookay~" she sighs, before her expression shifts to one of annoyance. "Still no luck finding the bad guy, though...."
Yeah, that's another little headache. ...wait, commands have to be conveyed somehow, even if it's by magic. To use the analogy of radio (or a telephone signal), Ruby might have been able to trace the signal back to its source. ....aaaand you completely left her to her own devices back at the hotel, without so much as an instruction to stay put. Great. Lovely. Wonderful. That can only end well.
Judging by the lack of region-spanning special effects, you're assuming that Moka's rosary hasn't been taken off, so you can't count on her to do much right now, either-
"Jotaro-senpai! Heeeey!"
...Kurumu? Is she already done getting people out of harm's way?
After putting your fist through another exploding plant, you turn and tip your hat to the buxom bluenette as she touches down on the ground.
"Mr. Joestar called in on your cell phone," she quickly explains. "He went back to investigate Witch Knoll again, and he said, quote..."
Kurumu takes a deep breath, and then - " 'HOLY SHIT!!!! THAT DEAD BITCH WE SAW IN THE CHAIR EARLIER IS MOVING AROUND AND COMMANDING THE PLANT MONSTERS BY HERSELF!!!!' ....yeah," Kurumu concludes after checking her memory again, "those were his exact words."
Bullshit! The dead can't come back to life! Even the idea of a Stand being able to do such a thing is preposterous! ....but then, from little you understand of the scenario, a Stand might be the only explanation for it...
Kurumu notices your unease, and looks fairly anxious now. "...senpai? It's impossible for dead people to come back to life, right?"
[]Reassure Kurumu.
[]You really have no idea.
From what you can tell, the monster situation appears to have been mopped up rather nicely, if messily.
[]Go to Witch Knoll and back up your gramps.
-[]Alone.
-[]With Mizore.
-[]With Mizore and Kurumu.
-[]With everyone.