No response from her [I Use Facebook]

Well I haven’t gotten a response from one of the girls that used to talk to. My old friends sort of ex friend. I mean it’s kind of confusing because I did remove her from my life three years ago because she hasn’t been contacting me so I told her there was no point and then a few months later I deleted my Facebook account. Then this year I decided to go back on it in a month ago I added her on Facebook and I messaged her but I haven’t heard nothing from her. I messaged her three times. I took today and I’ve got nothing. Maybe she doesn’t go on Facebook like she used to. Nobody else is talking to her in years either so I don’t want to give up because we had a special friendship I might as well just move on. I don’t want to message her friends because I don’t know them that well and I’ve never met them in person so there’s no point.