April fools is over but she went to far so I think u should get her back ! I suggest something that will show her something's are not to be joked about! Maybe something including one of her single friends, like a heart felt break up explaining how u have been seeing another girl for a few months u never wanted it to happen but now she s pregnant u feels it best if you move on and raise the baby , if she asks who just tell her it's irrelevant , be sympathetic and apologetic and at predetermined time get the friend to send her a text her something like omg I just found out I'm pregnant ! Watch her as she slowly starts to put it together let her freak a bit and have her friend send a text saying something u don't joke about!
Depends on what she did to you! You can air horn her, scare her somehow, put a whoopy cushion where she is sitting of course. (Be sure to record it) OR.. you can video tape her snoring in her sleep and put in on Youtube!! LOL.