@moksha8088
You can kill Hank once Audrey leaves, or specifically once the interrogation is over. She departs at stage 110 of x3DNPCMQ1.
If you’re having trouble, type SQV x3DNPCMQ01 in the console, find the stage, and use the bug report/troubleshooting section. This video shows all 3 outcomes as intended, which I’ll list here.
1) Successful interrogation, followed by the choice to spare/kill, stage set to 100
2) Killed during interrogation, failed quest, stage set to 250
3) Beat up to force confession, same as #1, stage set to 95
The only thing I found that might bug out is the beat him up option, #3. I tried killing him several times just now and once the quest didn’t fail properly and gave me a “success” on the objective – this is because I was punching him so fast I triggered both outcomes, hitting him into submission and then killing him immediately after.
So I’m gonna have to tweak the script so death before stage 110 fails the quest no matter what. But what you’re saying, that the quest failed after Audrey left, should be impossible as far as I know, but the stage and a more detailed report should be given.
On that note, I made a thread for you. Closing this one.
http://3dnpc.com/question/ties-that-bind-killed-hank-and-quest-ended/