So I try to be nice to my oldest daughters daddy’s girlfriend but I feel like she doesn’t like me…

So I try to be nice to my oldest daughters daddy’s girlfriend but I feel like she doesn’t like me lol . Honestly I don’t care but I like to be able to talk to her about my daughter if she is going to be involved in her life also . But everytime I try to talk to her she just does obvious stuff that makes me think she is annoyed with me . Any advice on how to tell her how I feel ? ( and also already talked to my daughters father but it just goes in one ear and out the other ) 🤦🏻‍♀️🤷🏻‍♀️