Reny is grounded, with Robbi. You need to get out.
Find Mr. Bunny and talk to him. If you don't know what to do, talk to Robbi, also.
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "Level 4 - At Reny's house" in Kapia. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.