I'm assuming they're playing Monster Hunter, since it's so similar, so the item Aya's talking about should be Lifepowder. Following MH's translations, I changed the words on the screen as well... well, unless "You Died" was to make Aya's rage more humorous..
Aya?!!You've fallen unconscious.Hatata... we failed this quest...Damn iiiiiit!!!Today is a cold day, so......the tengu are resting in Kourindou.Darn it, I'm almost dead!! Hatate, use Lifepowder!Huh?!!! Hold on!!! I got put into sleep...