«To me, No. 1's use of past perfect sets the action to the time before some event»
This is actually an example of the standard "No sooner" phrase. See, for example:
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«2's use of past tense shows her getting word is not in the time a factor in the time line -- if it had been a factor, then she would have used a past perfect here too. »
Time factor, huh? I don't know what you mean here.The Past Simle was used just because there're no events that "getting word" is prior to and that may cause troubles in percepting the timeline. Past Simple is the main tense in the narration.
«Nos 3 and 4 are inadequate in that what happened before what or what happened after what is not clear with two uses of past perfect, and this lack of differentiation is further exacerbated -- that is how I see it -- by one more use of past perfect, marked as no. 5.»
Instead of thinking about the interrelation of (3) and (4), look at them this way:
— Past Perfect in (3) tells that (3) happened before (2)
— Past Perfect in (4) indicates that (4) took place earlier than (2)
As to which occured fist — (3) or (4) — from the commonsense's viewpoint it's evident that the first was (3). And, BTW, (4) is hypothetical, because it never happened!
(5) is quite natural as well: it's the alleged reason of the hypothetical reimptisonment, and as such, the reason (or the cause) comes first. So, this use of Past Perfect is triggered by the need to show that her "saying something to them" was the cause of the reimprisonment.
«...absence of a tense or tenses to go double or triple back in time for an action or an event that took or happened.»
Tenses on their own are not enough. One must draw additional information from the text, which native speakers do automatically.