This wasn't a great episode compared to the first. A lot of stuff didn't quite make sense. The first half was pretty clearly rushed.

Where it fell apart was at the show. The dressmaker having the better sewing skills was fine, but a fashion designer that can't sew at all, but was criticizing his new intern on his stitching techniques? Whatshisface should know how to fucking sew, at least enough to fix problems exactly like this coming up.

He was right that her father seems like he sent Chiyuki to fuck with him. It's Tokyo Fashion Week, fine, the good ones are going to be booked already, but you can definitely find a replacement model with appropriate height, if you really need to. Grab a gyaru off the street. But Chiyuki's height is definitely a problem because the clothes aren't made for a model her height.

Which is kind of a problem with Chiyuki's height issue to begin with in the premise. If the clothes are made to fit her frame, then it's totally fine. It's getting her to super/hyper model status where designers would make clothes solely for her to model that's the problem.

"The audience are expecting exactly 40 dresses or it is a failure." Yeah...okaaaaaaay. Wear the dress yourself asshole. Unless he heavily advertised that he'd have that exact number, I seriously doubt one missing piece ruins the show. Shit happens. I think it is less likely that rearranging all the models to show the collection faster using fewer models is acceptable.
The rest of the "forced" drama works and makes sense. His dressmaker was super overworked. Models don't show up. Last minute alterations have to get made. All fine.
But the criticality with the number in the collection seems like fabricated bullshit.