Can't it EVER be easy?

After solving the riddle Princess Dori went through the new passageway. It was gloomy but she could see light at the end. Unfortunately, when she got there it was barred by a gate - and the key was on the other side!
Try as she might she could not squeeze through the bars. I have got to cut back on the bacon treats when I get home! she thought wryly. HOW am I gonna get those keys?