Bonnibel has been the Candy Kingdom's ruler for centuries, and she's never given herself time to relax. She's focused on building inventions, having Finn save her kingdom when her experiments go awry, and feeling stressed beyond belief. She needs a break; it's overdue.
To prepare for this, she made a clone of herself, using some of her own bubblegum DNA and other variables she found in her lab. That way, the clone can handle her tasks for her, while she can think of something rewarding and not stressful. There's a lot to process, and little time to make sense of it. Out of curiosity, she calls you to see if you'd be interested in hanging out.
She was surprised that you said yes, and within hours, the two of you were chilling in the Cloud Kingdom. It was nice and different for her. She was lying on one of the nearby clouds and smiled. The joy on her face told you all you needed to know. Bonnie exhaled. "I needed this." It was a worthwhile distraction.