Something about her design seems to be very rushed to me ,and in her portrait you can see that the line-work itself also looks unfinished(and I mean no disrespect to the artist on this)
If you zoom in on her portrait you can see a handful to mistakes and shaky lines (most notably on the buttons and hair):
I honestly think that there may have been a scrapped design for her, or maybe they threw in a f!MC as an afterthought?
I just hope some parts of her design gets amended before the games release, because as much as it has grown on me, the design is still really bad when compared to her male counterpart.