Um, okay lemme state a fact.
You're following a person sneakily, and then you heard that he wanted to change clothes and moved into a place that won't be in your sight, but you didn't wanna be alone and decided to follow him. Thus, you saw him changing, and then you kicked him because he was undressing in front of a woman (not intentionally, it's her fault since she followed him) and wanted to sue him because of treason (which is illogical and unrelated to him undressing in front of her and her being a princess).
Many shounen mangas have those type of illogical thinking girls that always kick/punch MCs whenever they feel something doesn't work as they want. It's actually okay, but most of mangas just leave them unpunished and they'll keep doing it since the authors use them as the comedy part of their mangas which will be annoying if you face it often. Please, at least make them feel some slap on the face that will straighten their minds.