Is it time to unblock from facebook?

this may be a long story. But, about four months ago I lost my best friend to a stupid argument between each other, and around that time my prom date and I broke up and they went to prom together, so as you can see a lot of toes were stepped on and some words were exchanged, and the only thing that could be done was I blocked her from Facebook. Well, we are civil now but I just found out she'll be cheering with me on the team, so I feel like I need to be more then civil. so do you think it would be a good idea to unblock her from facebook, or just leave things as they are?