That's just an example of how characters aren't behaving like they should, but that one is outside of combat.

A Kith'rak would NEVER let a subordinate claim such a prize. His own pride would demand he kill the heroes and claim the weapon for himself. If anything, he'd have sent Beretha off to inform the others while his dragon torched us.

I also think it'd be cool to have to go hunting for SH afterwards and find her hiding someplace like Waukeen's Rest. Then you have to try to get back to the grove or something without being spotted by the randomly passing Quedenos. If you get caught, you have to try to run for it and find a place to hide or something before he catches and kills you. There are plenty of things they could do with this that would be scary exciting and lots of fun.

It's an opportunity missed in my opinion.