One thing that consistently turns me off of this quest is that Sabrina has alternate goals from Homura, but repeatedly reassures her that she has her best interests at heart.
Frankly, the only reason that we aren't reacting exactly the same way that Homura has been, is that we believe she is paranoid, but we've never exactly come out and said this or tried to resolve it with her - Rather, we've tried to bypass those concerns like a charismatic salesman; "Homura, whilst i think that Oriko has reason to be locked up, can we please do x thing anyway?" We rely on her trust so as to eek out further milestones of lax security, but every time they come close to suspecting this fact we're quick to excuse ourselves and manipulate them further.
Look, i can understand the need to keep info away from them that may actually harm them and cause a grief spiral, but can we come clean and explain less dangerous information, such as our full point of view and motivations when it comes to the kuras?
For example the fact that Sabrina suddenly trusts Oriko to not do anything bad despite the fact that she's only known them a week, as well as the fact that she's been trying her best to ease them into the idea of doing the same? Because that's all I've seen discussed in this thread so far - Ways of manipulating the other girls into accepting a person who they believe has wronged them.
Either take their side against Oriko, or explain to them that you're not on it and why.