Ne-Yo's Estranged Wife Sending Veiled Threats?

Last week R&B singer Ne-Yo's wife, Crystal Renay, filed for divorce after accusing Ne-Yo of adultery and having a secret child outside their marriage [click here if you missed that]? 

Are things about to get worse for Ne-Yo...?

Sure looks like it. 

Over the weekend Crystal shared a post on Instagram with the chilling caption, "Sugar and spice...you'll miss the days when I was nice."