Jaheira is in my camp at the start of Act III, then...gone?

[Astroooooooo]

I can go back to an earlier save, and she is still there. Did the fight on the Astral Plane, came back, still there. Go into Rivendell, do a few things, come back, still there. Explored the Circus, killed the imposter clown, talked to everyone in the Circus, go back to camp, she's gone.

I've re-loaded and re-played this several times, all with the same outcome: Jaheira just vanishes from my camp after I kill the clown in the Circus. Not only that: later when I get to her house, her entire family is just not there.

As this is not my first play-through, I'm just going to continue to the end (sorry Minsc).

Just thought it was a weird bug that I'd share.