It was really dangerous. She was fighting a really strong enemy by herself and used the attack as a last resort.

She totally thought she was going to die from using it, so on that front she was okay! But it left a weird pattern on her legs and she couldn't move her legs well. Which was a problem because they were a long way from home and in enemy territory.

[literally the WORST time for your weapon to get borked]

I haven't remembered if they get home yet. The furthest along I can remember now, her team is trapped in this... vessel, and it's self destructing in two hours and... yeah.

[BIG CONCERN. She finally realizes Lenalee didn't die fighting Eshi only to learn she winds up in another Certain Death situation.]