Lemon Dra has never been heard from, nor his kidnappers.
The same seems to be the case with Unicka. There was hope when there was somebody charged for passing on the message from the kidnappers (or somebody who pretended to be) but those charges were dropped and it seems no progress has been made with Unicka - or Vampire Dany who was kidnapped along with her (himself an excellent trotter, too, but still not in the class of Unicka who showed a potential which haven't been seen since Varenne))