Does the illusion seem to change at all over time?

The music does change, instruments slowly being added as the real world gradually fades out.

—she stops.

The illusion tries to persist, and the flames are still feeding on her chakra even though she's not actively pushing any in.

Uh nope nope nope she takes a few steps back—

The illusion is clingy, but the flames dissipate as she gets distance.

She tries to break it with a burst of chakra.

That works.

She blinks and looks around at the room, looking somewhat bleary like she just woke up.

"Are you alright?"

"Yeah. I'm—definitely more informed, if not significantly more enlightened. This is very—very curious."

"Have you come to any conclusions about it?"

"More or less. It does illusions and I'm not sure I trust it far enough to just let it show me, because it was draining my chakra—that's the sort of energy my magic system feeds on—faster than I wanted to give it and even after I stopped to want it to—and that fire was cool even though the jewel itself was hot—tentative guess is actually 'battery' but it's a very elaborate one if it is one—"

"Do you have any idea why the illusion?"

"Not really! Maybe it's trying to show me something but I definitely don't trust it when it's doing that while draining my chakra, I need to figure out a way to study the illusion without going all chakra-deprived."

"Describe the sequence of events from your perspective. What were you trying to do when each thing happened?"

"I was mostly exploring it to see what it did do with some basic interactions. First thing was just trying to sense its chakra..." And she outlines the steps she took and what she perceived, being completely honest about all of them—and extremely excited about everything.

"Hm. Is it possible that the hypnotism, the heating up, or the chakra drain are a defense mechanism?"

"First two, yes, likely even, but the third? Mmm, less sure. It didn't try to drain my chakra until I started giving it, and that's by all accounts not exactly a hostile action, giving it more magic."

"Point. How would you go about extracting energy from it directly without triggering the reaction?"

"Not sure yet. I need to come up with a few more exploratory tests, I only have tentative ideas about what it's even for and if I'm wrong and we do something like that to it it might decide to just self-destruct or something."

"Yes, proper precautions are often a good idea. How long will it take you to come up with new tests?"

"Say a week, to be on the safe side?"

"Will you need access to the jewel during that time?"

"Not right now, I just wanna check my notes and think a bit and run some tests on jutsu, and I'll get distracted if I have this around."