Sooo... She and her mentor made a deal to kill him or something?

I think he meant he was gonna kill her

That's even sadder

Well... If she is single and solo for the rest of her life then it's fine to live a long dragon life. But, imagine your lover, your friends and beloved teacher already died yet you still live. It despair. Honestly Aiden action is so upsetting. But what to do... She can't hate someone she love

Yeah when you put it that way I'd be way more pissed