Can't be real. First of all, I don't think you can get lvl.4 of cum-buff before the 3d phase of corruption (don't remember).
Second, triggers don't restrict lvl.4:
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Anything with "_coef" is a level of buff. So, cum_coef >= 1.5 includes level 3 and above. Spanking requirement is lvl.2 as you can see.
You're completely right. The lvl 4 cum-buff is possible, but that wasn't the hold up. The problem was glo_rep <880. The hint said "drop her Reputation to at least 880," so I had it at 880. I suppose it should have read "drop her Reputation below 880." Sorry for the mixup.