Yeh, so I tried to join No Mutants Aloud and it won't allow any of my email addresses.... so.. I'll just ask my questions here...

1. In the rescue mission for that girl from Shady Sands I killed all the raiders but I can't open her cell. What do I do?

2. I extended the time limit once but can I do it again?

3. If I get the water chip and turn it in do I miss a ton of stuff?

If you can't find a Key (Im not sure if there is one), pick the lock.

No, but you shouldn't need to

The water Chip is not the end of the game. As is typical with most people, saving their lives once is never enough....