The biggest way to adjust your feelings is to understand who’s issue it is. The sibling is the one carrying the biggest weight of her health status so it’s up to him/her if they want it to be shared. Often times people see HIV as a death sentence. Her ability to share that whether on social media, on YouTube, a blog, etc could be a place of peace and healing. Adjust ownership of where the pain of your sibling’s health issue is. People always say when others share things such as health issues that they are over sharing but people don’t realize the peace that comes from being authentic and open. To not give something that is deemed so negative space. To help another person make better decisions while listening to or watching you make mistakes and owning it and not allowing it to own you.
I’m not being insensitive that you will have people who do not understand your sibling or may even shy away from him/her and maybe you feel like you want to protect him/her. It isn’t your job to do so. Your job is to support and love.
Another way is to speak to your sibling about how you feel about the openness they are willing to share. Maybe releasing it will help you adjust. Be understanding when your sibling acknowledges your feelings and still decide to walk in their truth boldly. It is their right to do so!
I would also research ways you can assist. HIV just like with any other health scare has ups and downs. Find ways to support your sibling when the times get rough. Find ways you can be their peace instead of thinking of only how you may feel. Although technology is ever changing and cures are being found daily, this is a battle that needs to be fought daily! He or she will need to know that you have their back no matter what! Focus on that instead of the sting or stigma you think will follow.
I wish you well and I wish your sibling well!!