My girlfriend blocked me? Please read?

The last time we saw each other we had a fight and she slammed the door shut and left. I contacted her a week after and said I missed her. She said she missed me too and we were on good terms I thought. We texted a bit the next day and I stopped answering her text. I didn’t text back the entire day so essentially I left her on read. I was sleeping and a text from her came through saying “Fine ignore my text. I’m blocking u. Goodbye”. Now I am blocked. What should I do? Is it my fault?
My girlfriend blocked me? Please read?
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