(Bokura no Love Live! 13) [Perorimeshi. (Nigirimeshi)] Chikazukisugi ni Youchuui! | Be Careful Not To Get Too Close! (Love Live! Sunshine!!) [English] [/u/ scanlations]
"I don't want to get kicked by a horse" is a phrase akin to "I don't want to throw rocks at that beehive"; it's just her saying that she should not stir up trouble.