Current tl here, according to the announcement from the old groups, it seemed they took chapter numbering from volume raws which was different from digital raw. 3 chaps different on numbering, I'm a bit annoyed by it too but it is what it is. Rest assured you didn't miss anything.
She bought something akin to medicine a few chapters ago, maybe that one dropped into ocean when the boat was shaking (as hinted by her surprise on page 6).