My issue there is, its not a scenario where Deever is the only one at the department who thinks their dangerous, at no point is her boss going "oh yeah we are done here, no more hunting". He's just "ok lets not do this at public school where it will create a media relations nightmare."
If it was a scenario where her boss was packing it in, than the push could make more sense, as this is her "last chance" to get them. But it wasn't, they pull back, regroup....get them at a less public place. Operations change all the time due to real world circumstances, Deever as a veteran officer would be extremely used to that.