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I'm not doing a whole thread-run for this, but I'll post this particular shot here.
This is what the nurse's overworld sprite looks like from the back. Apparently the bow she does is created by having the bowing image as her up-facing sprite and she simply turns her back to you after healing to cause her to appear as though she's bowing. I never knew it worked like that before now. Also no screenshot, but Prof Oak was Gary and the rival was a little girl.