I suppose its because Suruga is unconfident in herself to be a top~
Even in game she is a nervous wreck. Hilariously, all of her attempt avoiding spotlight put her into spotlight ironically. She is the type who speak brave words while scared on inside, its funny that Shimakaze actually forces her to be in spotlight just because she is a capital ship that she first meet. I can confirm her transfomation undone when she is nervous.