Ixy apparently was not sleeping at all. After Rae left the room, Ixy walked towards the door with very slow steps, then she stood very close to the door, and clearly, she could hear the conversation between Rae and Naoki, however, she did not think at all what was actually being said by Rae and Naoki were about her.
She thought that the conversation was just an ordinary conversation. After hearing nothing from outside through the door, she then slowly opened the door, then walked out of the room quickly, and started running towards the backyard of the orphanage.
After she had arrived at the backyard of the orphanage, because there was no one at all, Ixy started to walk towards the wall fence next to the backyard, then tried to climb up the wall fence, which was not that high. After various ways she used, finally slowly, she began to successfully climb the wall fence.