Not easy

One of my coworkers cheating on her husband.  Found out couple weeks ago, and can't have our easy relationship back.  I'm not judging her, but I'm heartbroken for her spouse and little boy.  Every single time she takes late long lunch, or have an appointment scheduled or have errands to run, I cannot help but question it.  All day long she texts non stop and quick chating on FB.
It's not my place and none of my business but I wish something would happen and put a stop to it.