(note: I'm not sure if this is the best way to upload the image, but I couldn't make it work otherwise, said it was too large)
![Image](https://c1.staticflickr.com/1/401/31649330484_e76f638621_h.jpg)
I was able to determine by moving the cursor around that she died right next to where my cursor is currently placed in the screenshot, to the right (or, the square top-right diagonal to axe shinobi here). Tried literally every cardinally adjacent square, nothing. Just had to leave her bleeding, she had some upgrades on her AR but luckily nothing too important lost.
I'm not even sure if this is a vanilla bug or something else dumb and totally not related to LW2 (I have no other mods fyi). But figured better to report it and have nothing be down than not report.
Moral of story: Advent playgrounds really suck.