it's ok, duke. there'll be pot-au-feu waiting for you when you get back!
but yeah i get our guy's desire to reduce the overall monster count so the people who're originally fated to die might survive (at least i assume that's why he's doing this), but starving & overworking yourself so you can't respond properly when whatever crisis he's predicting comes knocking is just... really, really dumb? lol. did she die because she couldn't handle the sheer volume of horned rabbits (doubt) or because something big appeared and she couldn't escape? stop exhausting yourself fighting slimes and prep for the boss fight you big dummy