"No, no, I think just a strong talking-to is in order. I'm not sure how much of her resetting is a bluff, but I don't want to take the chance. After all, I think I've done enough of that." He shakes his head. "I won't put anyone at danger on my account. If I go to her, I go to her with diplomacy."

Great.

This is why Aziraphale will get himself killed. Should Rosi ever go back to the lake, don't be surprised to find his body washed up ashore.