If they were good at extracting information from others using torture or other methods, then they would be able to get something out of her, as they would be able to keep her alive and control how far they were willing to push her each time.
There were many ways to try to torture them to get information, and among those were times when a person had too strong a will to endure a certain level of methods that could be used on them.
It was always possible that they could give up false information, knowing they would die, even after giving up any form of information, so it would be better for them to give up false information to let things end sooner and take a little revenge in the process.
If they gave up false information before dying, then their captors would either confirm it for themselves and vent their anger, or they would simply accept that they were able to make that person talk.
