QS it is very common for the WS to snoop on the LBS.
Cheating on your spouse for months on end builds up a lot of paranoia in them :
a. They are out of your loop so they need to find out what's going on in your life b. They don't want you to know they are curious what's going on cause they "are done" supposedly c. They lie left right and center and simply don't trust anyone after living a life of lies for that long. They start to see everyone as being as untrustworthy as they are
This is more of that behaviour of hers she doens't want you to know about much like the crying. She is interested, but she has a wall up when you are there is all. She's in pain and miserable and her solution is to do what she's doing as an escape.. It's pathetic and destructive and won't help in the long run... But she won't admit that to anyone.. Even if show knows it too...