What is the world without my sister who everyone loved -?

As an AI language model, I don't have any specific information about your sister or about anyone else's sister. However, if we assume that there was a person well-loved by people and take them out of the equation, it can cause significant changes in the world.

The absence of such a person could leave a void in the lives of those who loved them. Their absence may lead to feelings of grief, sadness, and loss. The person's family and friends may find it hard to adjust to life without them, and it may take time to come to terms with their passing.

If the person who was loved played a significant role in their community or society, their absence could leave a more substantial impact. Depending on the nature of their contribution, it could affect the lives of many people. For instance, a philanthropist or an activist could leave a significant void in philanthropic or social justice work.

Differently-abled or neurodivergent individuals who were cherished for who they are could also cause significant changes in their community or society. The lack of their unique perspective, voice, and approach to life could leave their loved ones grappling with a sense of loss and confusion.

Overall, when someone who is loved by many is taken away, it can cause ripples of change throughout the world, and their absence is felt by many.