How To Tell If I've Been Blocked on Facebook

I only go on Facebook to write to a female friend. I wrote to her on Facebook messenger saying I'm going to delete my Facebook account and reset my PC to factory conditions because I downloaded a virus. I gave her my Gmail address.

Before I deleted my Facebook account I checked to see if she replied on messenger. Her whole profile disappeared. I searched for her profile but couldn't find it. I discovered that more than likely she blocked me and that's why she disappeared.

I deleted my facebook account and reset my PC to factory conditions. I created a new Facebook account but still couldn't find her. Does anyone know if someone blocks you on Facebook - Facebook keeps your IP address for anyone who blocks you?