I’m not sure those are supposed to be her memories, but rather that they represent her fears about her own future. Natsuko has writer’s block because she doesn’t think she can pull off a first love story, and thinks all of her ideas are crap and unrealistic because she has never been in love with anyone herself. Natsuko is the one wears her hair over her face, so it looks like she is projecting her doubts on her fans and coworkers, waiting for them all to blame her when her latest film flops and it turns out she isn’t the genius she is supposed to be. I think in her little Perishing dream world, she has been getting the perspective she needs to fill in her gaps as a writer. Definitely lots to speculate on how that front has been shaping up, so it should be interesting to see how it wraps up!