Why does she still show up on my newsfeed even though I blocked her everywhere? I don't do the jealous type, thank you!

She was a nice girl, but she was already investigating other women in my life after six weeks. Too much too fast doesn't cover it. I politely tried to friendzone her, but she wouldn't accept it so I had to block her. Now, years later she is showing up in my feed and I want nothing to do with her. How many ways can I say no to one person before she takes the hint?