I need advice

Andie

I left out names for privacy. "Baby mama" is my boyfriend's daughter's mom. Kinda self explanatory, I just like to make things clear as possible.

My boyfriend's daughter is going to be staying with his mom for a while. She lives with her mom and bf and I work too much to keep her when she comes to visit. Obviously, my bf is going to be spending time with her. Before I go any further, I love her to pieces. She's a great kid and I wish we could see her more than once a year. But before baby mama gave her over to my boyfriend's mom, she told her "tell Jace's new boo I don't want my daughter knowing about this half sister crap." Boyfriend's mom told Jace (bf) what baby mama said and they both agreed to not tell my bf's daughter that I'm pregnant with her sister. When Jace got off the phone, he told me about all of it and then told me he was planning on not telling her anyways. He doesn't want her knowing this year and agrees with baby mama on this. I know I have no say in what goes on in their daughter's life, I just wasn't expecting to still be treated like I'm "just another person" when it comes to his daughter, my eventual step daughter. I don't know whether I'm justified in feeling a little slighted or if I should be understanding about the situation.