What she means:
Pokemon mystery dungeon should not be for kids. Those feelings STICK with you man. I still get emotional when I hear "Don't Ever Forget". I've cried over one game and it was mystery dungeon. That shit changes a kid. It follows you forever. You could be going through your day like normal, and remember Grovyle, and how he was willing to sacrifice himself for you, and how he realized how strong your bond with your partner was, and then you just start to cry inside of an HEB. Could you imagine your partner telling the entire Wigglytuff guild about your death? How much it must have hurt them to say those words out loud? The fact that the main character is silent through most of the game, only to speak at the very end is a genius way to make the scene that much more emotional. Those games had no right to make me feel that way.