(2-14) From your perspective: yours is the static frame of reference and Nefertiti is moving in it. So if length contraction happens in all directions, she – and more importantly her stick mounting - will consequently be shrunk in your frame of reference, compared to their heights in a static frame. Therefore the stick will inflict its damage upon you at a lower height than it did when Nefertiti was stationary: bruise number 2 will be lower.
From Nefertiti’s perspective: she is the static one and you are moving – so you are the one who shrinks and hence her sharp stick will hit you higher up on your body than it did when you were both stationary: bruise number 1 will be higher.
These outcomes are graphically illustrated below:
