Female school-aged club "managers" do not exist in the United States. What the hell is she talking about being the baseball "manager" like when they were in America? That was a load of crap. Like, maybe she did the same things as a Japanese club manager but just in the US, but that looked so awkward because it's forcing this Japanese-specific concept into a setting where it doesn't really exist.
Other than that, I hate how simple and shallow her character is. She's the character used almost purely as a plot device. She says what she wants to say without heed for what other people are saying. That's barely a character, a person. It's more of a plot tool to move things along.