Final answer:
Unable to provide an accurate answer as the provided reference text does not pertain to 'The Princess and the Goblin' Chapter 14. Therefore, we can't determine who jumped into Irene's room.
Step-by-step explanation:
In The Princess and the Goblin Chapter 14, the character who most likely jumped into Irene's room from the window could be inferred based on the events leading up to this point in the story. However, the provided reference text does not directly relate to 'The Princess and the Goblin', therefore, without the specific context of Chapter 14 in that book, it is not possible to accurately determine whether it was Lootie, one of the goblin's creatures, a goblin, or one of the guards.