I raised my voice at her, should I apologize to her?

I raised my voice at her, should I apologize to her?
Long story short, I had a stupid quarrel with a girl over a Youtube video she likes and I found boring. We just talked on the phone - she called me actually - and we agreed to wait a moment and see whenever to meet tonight or tomorrow. She sounded way mellower, but I'm not sure I should apologize to her.
I'm sorry she got offended, but I'm not sorry about what I said, it's my opinion and I didn't insult her.
My only fault was raising my voice at her when she called me "ignorant".
Updates:
17 d
We made up... I apologized for raising my voice and she apologized for calling me "ignorant".
I raised my voice at her, should I apologize to her?
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