@Hitomi I'm on my cellphone at work right now, that's the primary reason I wanted to wait.
In brief: Your theory rests on one of two antinomic assumptions: A.) I both did and did not catch Haruto's coptells, or B.) I am at once both very clever and very dimwitted.
Reads Haruto's coptells and you'll see what I mean: They are the same breadcrumbs by which we know she checked Parma. If I were scum trying to save the rolecop I wouldn't have done it with a counterwagon on the cop with a guilty on said rolecop. I would have kept Haruto alive because she wasn't pressing her cases very effectively and when you bandwagon the cop they claim and out all their checks (the fact that she didn't stuns me). This particular cop was more dangerous to the mafia dead than alive.
tl;dr If I were scum Haruto Tenjo would not have been my counterwagon to save Parma because I would have compromised myself and only bought Parma one more phase, if even that.