Jaheira romance, again (Dermin issue)

Hello again, I'm still trying to complete the Jaheira romance quest.
This time I'm stuck with the Dermin spawn(s).
In the attached save:
- Jaheira never died or left the party (except when she was called "back to the Harpers' hold")
- Dermin never showed
- LoveTalk variable is set to 51, and the time for the next LoveTalk already passed.
- DerminSpawn and DerminAppear variable do not exist

By going outside, the expected dialogue will trigger, but Dermin won't show and LoveTalk variable will be set to 52 (even number, bad).

Any suggestions?

Thank you!