[Right, so, this place needs good konpeito? Obviously the timing works out great once Homura arrives right in the center of the forest. Her jar, once she receives it from the Usyagi, is full of bad konpeito, and almost immediately starts influencing the negative energy and darkness around her. Is it affecting her, as well? Hard to say, since her expression doesn't change.
She's looking around with thinly veiled frustration and dismissal. What's... even the point of bringing her to a place like this? Likely making matters worse (or at least, not better), she's following the source of energy she senses, heading over towards the shrine itself. She isn't actively doing anything to sabotage, once she's started exploring... but she's certainly not helping that much, either.]