So, Death living as a human was believable but bringing back someone he killed was reaching?

I wondered more if SHE knew, by wording it that way and I thought it was a dumb ending, which I had started predicting along the way would happen. They don't know each other and plus death couldn't magically bring him back, it was too much reaching.

That's a good take on the situation. Otherwise upon seeing her he probably would've been more like 'Hey.. coffee shop girl, right? What the hell am I doing here in this monkey suit?'
He seems to be aware that he's had some sort of experience that he can't quit verbalise, and I didn't take it to refer to the amnesiac variety.

Hadn't quite thought of that, but I think you're possibly right. But I still think it's ambiguous and could go either way. No matter - an excellent movie and one of my favorites.