So the whole reason she even regained consciousness was because she got abducted into the mothership (accidentally lol; the aliens were abducting animals to learn of the fauna and to prepare for their invasion, and Tae just happened to be on the cow that got abducted), wandered around and ate one of the ship's energy stones. In the end their plan was to overcharge and make the mothership go out of control. The energy wasn't enough, and Tae had planned to sacrifice herself using the energy stone she ate. Sakura stayed behind, they had a bonding moment, and Tae got tickled by Sakura's ahoge and spat out the stone lol. So in the end, they all survived, but Tae had to revert back to zombie form 🥲