A lot of it comes down to the can of worms that is Himawari's character. She's appeared in many other places and to other people, and her unique desires have been hinted at. It's clear that she does not share exactly and only the desires of another. We know from this scene as well that, for one, she doesn't agree with what's happening, and two, she's afraid of the repercussions she's threatened with. She doesn't necessarily want to "fight back" in this instance, as in initiate a confrontation, — although that's likely because she simply can't — but she doesn't agree with it and doesn't seem to want any part of it. She also seems to disagree with 79's view of her role in the show and why she's there, which would add context to the entire event and her involvement, but she's cut off.
She absolutely wants to help Akira, though. She cares about him and has helped him and others in the past. That's likely why she's upset with his treatment in Untitled. That doesn't necessitate her knowledge of how exactly the show is run, why it's run the exact way it is, or the knowledge/true motivations of any other character, though. She certainly knows more than us (about certain subjects,) but it's not clear how much she knows about other entities, the cycle, or therein.
On the subject of medicine, I'm not a medical professional either, but I have taken medical/field-medicine courses. Some times you do have to "break" something, but that's usually not the case. If it is here, which there may be some argumentation for in-game, it's not clear if, or how and why Himawari would know that, either. We also don't know if everyone's idea of "fixing" or "helping" Akira is the same, either. Some people seem to want to fix him by turning him into the ultimate teenage-fucking monster. We have to be careful not to ascribe knowledge to characters without seeing them possess it, and we unfortunately don't know a lot about Himawari. I recently made a post rambling about why she even exists, and that much isn't clear (in my mind.)