Well, it depends. In some cases, it could be just a normal thing where she adds a bunch of people. But if you've noticed that she's selective about who she adds to her private story, then it could be a positive sign. Maybe she values your opinion or wants to share something special with you.
First, feel flattered. It means she might consider you as someone special among her friends. You can start by simply leaving a nice comment or reaction to show your appreciation. If you're interested in getting closer to her, you could use this as an opportunity to start a private conversation about the content of the story, like saying 'I really liked that photo in your private story. It made me think of a great memory.' This can help you build a deeper connection.
There could be several reasons. Maybe she wants to get closer to you or show that she values your presence. It might also be a way for her to start a conversation or simply because she thought it would be fun to have you in her private story.
Maybe she's interested in you. Adding you to her private story is a way of getting your attention and starting a more private form of communication. It's like she's creating a special space for you to peek into her world.
There's a possibility that she likes you, but it's hard to say for sure just based on this. She could be adding you for many reasons. For instance, she might think you have similar interests based on previous conversations and wants to share relevant things with you in the private story. Or she could be trying to build a closer friendship with you. To really know if she likes you, you need to look at other signs too, like how she behaves around you in person, the way she talks to you in private messages, etc.
She could be going through some personal changes. For example, she might be trying to create a more private space for herself and only share her most personal stuff with a very select few. It's also possible that something you did or said made her uncomfortable, so she removed you from the private story sharing list.