Note: I don't know what the move morning sun looks like so I just made it up.
Jewel's p.o.v
After Shadow nuzzled me, I felt my heart set on fire, he liked me back and felt a blueish-white glow wrap around me as I slowly stood up. I grew taller and I felt my tail growl longer and slimmer and then split at the end. Then my ears grew longer and I felt tuffs of ear fur grow. Then a gem gently popped on, then there was no more light, I looked at my reflection in a nearby puddle, I was a beautiful lilac Pokémon with dark purple ears and eyes, I also had a bright red gem. I looked myself over, forgetting that Shadow was even there until I heard a voice, "Well I guess that you are a Espeon now. Congrats on evolving." I turn around and see Shadow, I felt my face flush. I heard rustling behind my back and then I shouted, "Psybeam!" It hit the bushes and out walked the others. "Sorry guys." I mutter, they just smiled and lead me outside. "Ok now that you evolved I think that you could use some training, by a double battle." Flame said. I nodded, and I walked to the opposite side of the battle field. Shadow walked right beside me, " May I be your partner?" He asked, I nodded and got in a battle stance. Ribbon walked right beside Flame, I heard Crystal yell," battle begin!" "Flamethrower!" Flame shouted. I dodged it just in time. "Psyshock!" I screamed, "Dark pulse!" Shadow yelled along with me. It almost hit them and I was angry, then I heard Ribbon yell, "fairy wind." I was blown into a wall with Shadow right beside me, he was knocked out cold. "Psychic!" I scream, I saw Ribbon and Flame rise into the air and then fall. "Future sight!" I yell and then saw some blue and white light appear and then disappear. "Heat wave! Moonblast!" I heard them yell, it hit me, I was surprised that I was still standing and then I saw the lights return, "morning sun!" I yell and the blast of yellow light hit them and then they were launched into the air and some blue and white orbs hit them. They hit the ground and dust flooded the field. As the dust cleared they fainted with swirls for their eyes. "Since Jewel is the only one standing, Jewel's team wins!" I heard Crystal announce. Pebble and Volt grabbed Ribbon and Flame. "Psychic." I say, using that power to gently carry Shadow into the camp. I set him down gently as Fern walked by. Fern was able to heal them but I was walking into the forest. I found some great berries but the sun set and I tried going this way and that but I couldn't find a way home. The moon was high into the sky, I started to sob myself to sleep.
Shadow's p.o.v
I woke up, only remembering battling with Jewel. The world was spinning but then it settled. "Hey where's Jewel?" I ask. Then faces of fear plastered their faces. Pebble slowly steeped forward and then said, "Jewel went to go get berries but she hasn't returned." I jump to my feet and ran into the forest. I used flash and followed some recognizable paw prints. I followed them to Jewel with a big basket of berries and salty tears streaming down her face. "Jewel wake up!" I say urgently. She wakes up, tears still in her eyes, I gently lick them away. "Come on, lets go home." I say walking away. She ran up to me, and pressed up against me. I gently lead her home, the others ran up to us, leading her to den. I dropped her basket into the middle of the room. I grabbed a couple of berries and dropped them in front of Jewel. "Shadow, could you maybe spend the night with me? I am still a little scared." Jewel asked. I nodded my head and I curled around her. We started to eat the berries together. She had a berry stain on her face, I gently licked her face. She blushed, "Cute." I said. She blushed even harder, she curled into a ball and I gently rested my head on her neck. "I love you." I muttered as I slowly slipped into a dream. As I was slipping into a dream world, I heard "I love you to." I heard her say. I smiled and allowed myself to dream.