Random

My S/O had a daughter from a previous relationship, she doesn't care for him and doesn't allow him the time he wants with her he (as well as me from his phone) texts asking about her, and asking when can he call. Most the time she doesn't respond unless her CS is late or she didn't get it all. He plans to take her to court once he finishes college because he had missed out so much. How do I as his woman deal with her and her attitude? We've had our exchange of words and she doesn't really care for me because he didn't want to be with her. That's the main influence why she kept his daughter from him in the beginning, now it's childish. We now have a son together. Any advice.