Yes, it... tricks you - it makes you believe there's no other option, so you experiment with whittling down her health with the intention of sparing her later... and just when it looks like you're getting somewhere, there's that sudden huge critical hit that overwhelms you with a feeling of guilt that you even thought about hurting her to get through the battle. Games are the only medium that can so effectively kill a character and then tell you that you did it...

We do seem to be developing a trademark here, don't we :) I'm hoping to at least keep the rest of my videos light!