kind regards greg
As soon as she starts doing her thing, the baddies will start showing up - kill the ones closest to her and ignore the ones attacking you, just stay alive, because they will move on to her as soon as you kill HER attacker.
At a couple of points while waiting for the action to start, take over turrets and cameras, and let those help you out in the defense.
I didn't care for this part of the game - but one thing that will get you thru it, is to quick save every step of the way, expecially right after completing a wave of enemies with little or no damage to the little sister.
I can't answer the question about the trainer.
I could NEVER get the trainers to work after the STEAM version of Bioshock that I have autopatched itself...
and before the UBER FLAMEBOYZ jump in, yes, I downloaded the updated version of the trainer, and yes it was the right version for steam.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem