Is it still considered ghosting?

There is this girl who said she liked me and I said I can't reciprocate your feelings.
She said ok but still wanted to keep talking, I thought I was ok with it but whenever she talked to me it looked like she was still hoping for a relationship, so I said can't talk to you anymore twice or thrice but she still kept calling or messaging so I stopped answering her calls and replying to her.
So, is it still ghosting if I told her I don't want to talk?
And if it's not ghosting then why I feel bad?
Is it still considered ghosting?
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