Uhm Fujita is acting like a normal girl actually. I mean, her actions are dumb and low, but nothing out of ordinary.
She is trying hard to close her eyes on quite possible malevolence of the ad for the sake of closing a bill - tbh, that how many people would act, having no bulletproof evidence of malevolence and being in a hard situation.
Imho, it would be interesting to see Fujita's growth as a person, seeing that she has a room for it.