Wife destroying family

As some of you guys know I found out my wife was cheating a while back so we came to the agreement she could have a lady friend instead of getting dicked by one of my buddies. Today is the second day in a row she has been at her lady friends house and she texted me to say she is spending the entire weekend and probably next with her. I don't really mind but my concern is the kids are going to start wondering what is up and if they find out it will affect our family very negatively. Does anyone have any advice on this? I want to protect our perfect little American family of 4. 🇺🇸