Forgive me for the length of this post.

I'm currently a college student and for the last couple of months, I've made a realization the in order to be a more successful person (not just in school, but just life in general), I should be more insightful in my mental health and decided to book an appointment with a mental health nurse in my campus. She made the suggestion of having a psychiatric assessment done. I went a month ago and was diagnosed with BPD and unspecified anxiety. 

When I told my mother about this, she was furious saying that I went to be diagnosed to have a personality and compared me to a narcissist. I have a speech impediment that causes me to misinterpret things sometimes, so she's thinking it's just that being my problem. She then told my dad who told me that the diagnosis was silly and I just have depression. 

I've been recently coming to terms with the diagnosis and am working on starting DBT in September (I move home in the end of April). Will my family warm up about my diagnosis, or will they continue the denial of it?

Tl;dr: Recently diagnosed and family's in denial