Event Editing, Help A Noob Plz~

Thanks to you both, I've been making leaps and bounds with the intro bit. Now, the last major issue I have is right here. During this one bit, Terra is able to walk through this with no problem. I assume this is how she and the others are tagged to be able to walk through objects. I can find Biggs and Wedge's permissions to do so during this, but Terra's seems to be... absent entirely.