She blocked me and she came back what should I do?

I knew her 8 months and said I needed more and said I want to get to know her more. She got really mad and told me I was nothing to her and blocked me. I don't know why she got so mad but I was crushed. I just let her go. Now she unblocked and texted me. But I was to scared to respond honestly. Why did she do this. What can I say? If anything. !
She blocked me and she came back what should I do?
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