Teacher, I don't know if this is right or not, but I do know that the funeral you likely gave me let me lead a "normal" life, even if it's a bit different from what you'd hoped for. You don't need to feel regret. That's all I'll say. Not that I have any way of actually telling you.
~~~
"What's wrong, Teacher?"
"Nothing. Just had a weird dream, is all. Must be getting old."
She was an excellent student. My only worry was that she didn't have a human heart. She didn't have a strong attachment to living. But she still came back alive so many times, just like I wanted her to.
She died in the end, though. She failed to assassinate the crown prince. They'd got word in advance.
"Selena, huh? Hmph. Not too bad a name," I whispered.
"Teacher?"
"It's nothing. Right, let's get back to training."
I don't mind what life she's living so long as she's got no regrets.