I think it is unlikely to be Minthara because of a simple fact - Minthara observed the nautiloid crash from one of the temple's towers during the cinematic sequence (after we connect the transponder). And during that cinematic she and Ragzlin sent a goblin squad to sniff around the crash site. Thats why I think we can see three dead goblin bodies near the portal where Gale greets us?
I think it ought to be one of the tadpole hosts that broke free from its pod. Shadowheart went north (exactly where the crypt door is), so I still think it is not about her. It is not Mizora either, because I think her pod can be found under the bridge where you can chat with Aradin. Technically it could be Jaheira, but its unlikely that she'd be hanging out in the middle of nowhere.
Can it be Karlah? I won't call her beautiful though hehe...
