This one was more mundane (in a neutral-good sense), felt less ominous, guess the previous one was the hook and now the author will just ease us into the world, it's nice to get some downtime.
I also made the conclusion that it was thrown out because of how nonchalantly it was "thrown" but upon another look at these last few pages, that doesn't seem to be the case, the fact that it wasn't check is good. See how other letters privacy were torn open and had some of their contents censored over with a black highlighter. I suspected that this is done to censor over any content in the letters that isn't genuine or contains words that may hurt the receiver. The fact that these "inspectors" didn't feel the need to open the six-armed lady's letter and they put back it in the letters train cart thinggies, shows that what she wrote is all good to go and doesn't require any inspection and censoring. I would like to think that the fact that her letter got the OK immediately tells us that what she wrote was really genuine and heartwarming especially since we were never told what she actually wrote in the end. This is a good case of show not tell.
Likewise, I enjoyed this chapter and happy to see everyone else did too. It's been a while since the previous one so i was overjoyed to actually have something to read. I totally forgot that she appeared in the first chapter. Seems like all these well thought of characters designs aren't a one off thing and will appear one of these days as the story progress.