Faust was robbed of her time instead of it being the other way around. Hopefully she got paid for that, though knowing Hifumi, getting paid would have lead to a whole host of other stupid nonsense.
Considering this is the old Nagisa art, and Seia is nowhere to be seen. This must be before the Eden Treaty. Which means this is Nagisa at her most paranoid, I wonder what the likelihood of this event being somehow related to her suspicion of Hifumi.