i sent u this earlier but i'm not sure which one u'll see first, so: i noticed when playing oras that kirlia didn't learn psybeam anymore leveling up. until it evolved into gardevoir and learned psychic, the only offensive psychic move it had was confusion. idk if this started in oras or xy, but yea.
That's what she meant. She knows about Roselia's changes because she looked them up after hers learned Petal Blizzard. She was asking about other negative changes to other Pokemon learnests in ORAS where the Pokemon learns a move that doesn't complement its stats (like in this case, Roselia learning a physical move when it's specially oriented), doesn't learn a good move at all that it used to know, etc.