Joy was unable to move her own limbs. Or mouth. Or even her eyes. She's forced to sit and watch as her body looks Sadness right in the eyes and say "I'm sorry. Riley needs to be happy." And shoot up the tube, watching Sadness's shattered look disappear into the distance.
Joy woke up screaming. In a blind panic, she practically broke down the door to her room and rushed over to Sadness's. Throwing the door open, her heart stopped. Sadness wasn't there. Joy's knees gave out and she fell to the ground, lost in sorrow. But then a hand laid itself on her shoulder and a soft voice asked "Joy. Are you OK?"
Right. Sadness was sleeping in her room now. She probably woke up the blue emotion with her shouting. Guilt wracked her system, but she just forced another grin and said "Yeah! Sorry. Just a nightmare." Sadness took her hand and gently led her over to their room. Sitting her down on the edge of the bed, Sadness turned in the bedside lamp and took a seat next to her. "Joy. You've been having these nightmares for weeks now. I understand that you may not want to tell me, and I respect your privacy, but please Joy. I'm worried about you. What's wrong?" Throughout Sadness's words, Joy gradually started to tear up. And after she had finished, Sadness put her hand on Joy's leg. Reacting to the stimulus, Joy looked over at Sadness, and that was her final mistake. She saw nothing but concern and caring in Sadness's eyes, and all the emotions that were in the room (heh. Funny) overloaded her. She started crying, got off the bed, and knelt down in front of Sadness, already begging for forgiveness before even speaking. "I-I left you." she choked out around her sobs.
"What? You never left me Joy." Sadness said, concern in her voice.
"In Long Term Memory. I t-tried to go up the tube. I tried to leave you behind!" Joy wailed out, thinking that Sadness may very well hate her now, but being unable to take her face out of Sadness's sweater. Sadness waited in silence for agonizing seconds, thinking about what Joy said. Finally, she put her hand under Joy's chin and lifted her shining eyes up to meet hers.
"What you did back then was wrong. Leaving me behind like that wasn't right."
Joy tried to stop herself from shaking, telling herself she deserved everything she got. It didn't make it easier.
"But you've grown since then. You've learned and changed. And I forgive you for what you've done."
Joy, unable to do much else, started bawling again. But now Sadness pulled her into the bed and held her while she got through the process of forgiving herself.