Can I press charges against someone for communicating threats via facebook?

I’m four months pregnant and just got several phone calls from friends that told me this certain person is threatening to kick my ass on Facebook. I have had issues with threats with this person in the past and have personally blocked her on Facebook, so a friend emailed me the status with the time stamps and everything on it. The information shows she has posted my entire name as the header of her status followed by the threat including mentioning my “fetus”. Normally I would just lash right back but I’m pregnant and I’m tired of dealing with her drama over and over. She just won’t stop and I’m over it! Can I press charges on her for the threat to show her that it’s not okay? To prove I don’t want anything to do with her or her family and that it’s not okay to harass and threaten people on Facebook because she thinks it makes her a bad ass and that it’s cute?