Do you miss your ex best friend?

The truth is I miss her company and how lively she is, she protects me in times of trouble, be there when I'm sad or lonely...but I stopped talking to her three years ago and I have no plans to talk to her again..never in my life all because she was sick. A sickness that can ruin relationships..I hope she can cope it..she is such a risk and I decide put her down and just dropped..