Mavrik, I know this is hard. I know you are scared. I also know you are spending way to much time focusing on her and what she might do. It is REALLY hard not to. Also trying to figure out what is happening with her EA is a waste of time. My WW moved over 1000 miles away. She left her 2 young children here. She stole from her 21 year old daughter and damaged their relationship. She started out as EA and then picked up and moved. My WW has done things I never thought she would ever do.
In house separation is very difficult. If she is still having an EA, you would be better to move on as if she was moving out tomorrow. You know that old saying if you love something set it free! Be the bigger man and worry about you and your kids. Hang in there! It will get better. I was in the same place as you when I got here.
Me:44 EXW 44 Wonderful Children M11, T14 BD 6/14 OM Confirmed Divorce Final 2/25/16 "It works if you work it!"