Shimakaze isn't my favorite ship girl, but the author of what's supposed to be her manga seems to straight up hate her.
Spoiler for Spoiler:
The latest chapter has newcomer Yuudachi wrecking her, and without torpedoes or the like, but kicking her in the gut.
I understand this is meant to be a serious approach to the series, and cheeky girls like Shimakaze need to get a lot of tough love, or just suffer to learn the lesson in those kind of stories, but this is painting her in a really negative way, as a weak, childish jerk who needs to be punished, and it probably doesn't help Yuudachi either, though this being her kai 2 form, it makes more sense for her to be so aggressive, but still, appearing so suddenly just go "you suck, step up, girl", I can't help to be reminded of a certain magical girl show that did the same, and it sucked.