Really, Frau, you should have waited till Lab said it was alright. Luckily, there was only a trace of the sleeping fragrance left and the most it would do is make Frau is little drowsy.

"That is what people say in greeting, Frau. There's no need to be impolite. It's your own fault after all that you were arrested. Now be patient. I have to figure out which key opens this door."

And with that he held out the ring of keys and tried them out one by one...