(asdfghjkl sorry if this isn't good enough aaa)
Arsenic didn't know what she was doing at the mall; sure she was holding a shopping list and crossing off some of the items sporadically, but in general she was pretty much running around and going into random stores in the hopes of what they were selling was what she was looking for. Nice. She got to the second-to-last item... okay what did Persona need that item for??? She comes across a store and it seems to have what was on the list.
In the hopes of finding that item, she accidentally wandered into a clothing store and started rummaging through the items... and then she noticed ASTROBOT in the shop. She wasn't... even sure on how he was even able to even get into the mall, let alone the shop.
>Don't do anything
She decided it was better to keep to herself but she was curious about the robot.
She ended up trying to eavesdrop and apparently he was furious at the cashier for... something. Maybe it was something involving the sale at the store?
She couldn't make out what the cashier replied with, but whatever it was, it infuriated ASTROBOT even more... and then before she was able to fully understand the situation, ASTROBOT started to laser and destroy everything in the store, insulting everyone and everything.
Arsenic just decided to bolt and leave the scene as quickly as possible... she'll finish her shopping another day.
Arsenic... well, after that, she decides to calm down by walking around in a nearby garden.