He belongs to me, not the world

Julie loved her husband, so much that no one would have the slightest doubt about it. She had strong belief that she was happy as she loved her family, and they loved her too. Being in this family was probably all that Julie ever needed as she seemed uninterested in all those other things in the outside world. She had a big house in the far countryside, didn't go visit her mom often, and she even didn't discover another woman that was so close to them for years, not until she was completely away from the world, again.
When Patrice went away, she tried going with him but failed. So she tried to stay as far away from the world as she could, shut all the windows and doors to the outside, just in order to be closer to him, in their ocean-blue dream. No others shall hear his greatest work but her. No she wouldn't allow that. She left all things behind, and refused to receive anything new, saying those were all traps, traps that were to separate her from him. Yet she didn't want to see anything with connection to him being around her in this meaningless world. They were now together in some place high above the clouds with their symphony resonating day and night, not in this noisy world any more. One night with Olivier, selling the house, visiting her mom one last time, accepting but not receiving the necklace were all the debts she owe this world. Then she paid them all, one by one, and now she could freely say her goodbye to the world.
But there came the photos.
She would most likely die peacefully in her dark room, huddling up in the sofa, staring at the blue hanging, with their symphony in her mind, if she did burn his case and not giving it to Olivier. But she saw the photo, when she thought she managed to keep herself from the past. Sandrine tore up everything, and the hardest truth was, that she was not only a mattress, but also loved by him. Sandrine tried to stay calm, but Julie was always calm, or even cold. She needed just the truth, not revenge. Now that she got the answer, she immediately decided to jump from their paradise down to this world. The old flute man once murmured to her 「everyone deserves something to rely on」. Fortunately, even she had tossed away everything, there was still a man there, loving her as he always did.
「He belonged to me, not the world. Now that he has left me for that world, I』m not his anymore. Neither is he mine.」(Editor adds)
That final smile looking far into the distance is for her last finding-out of the big joke life has played on her. She never wanted to be in this big world, but really, she never was.