Yet again, i'm playing through ep 3 trying to look for spoilers. In the train station when Lee boosts Clem over the fence she is trapped with a walker. Lee's gun skids under the door for Clem to get a hold of. She freezes up and doesn't help Lee kill the walkers after him.
As an experiment I went back and looked to see if she got me the keys and if I didn't open the door, if she would shoot the walker coming after her. The walker takes about 20 seconds to get to her so I just waited. Lone behold she did nothing and is overtaken by the walker.
Anyway I frapsed it to see what she would do, and the outcome broke my heart. I can post vid if anyone wants.