Would this hold up in court?

My manager has been treating me horribly. I finally had enough and snapped. I yelled at her. We both argued, which is not a big deal. We talked it over with the district manager. When I got home I wrote a facebook post (did not mention her name) and I explained the situation and then I made sarcastic comments about how she doesnt do work and just texts. Well I guess now she is going to try to sue me for that as harrment and slander. But she is not a friend of mine on facebook, it only pointed out her acting unprofessionall, and did not say anythig personal (excpt the fact she always talks about her life). Would this hold up in court? Ifit did what would be the worst result? I live in PA. thank you.