How do I fix my relationship problem?

My boyfriend and I have been together for almost 2 years now. And last february I moved in with him and his parents because things between my mom and me were getting worse. Lately, everytime I talk to her and try to plan something out with her she gets mad at me and accuses me of avoiding my family. Since I have moved out (9 months ago) I have probably visited 12 to 15 times. My job and school keep me from really doing anything "social" including family. But i do what i can to make it work, How can i make my mom see that i am not avoiding her and that she cant blame my boyfriend for "keeping me away?"