Trent, I have to disagree somewhat here. The being home part with the S2 is definitely a concern here. Care for the children needs to be YT's main concern right now.
YT, have you considered full custody? You need to document everything you can here. When she goes out, when she comes home, how much time she is spending with S2. You may need all this for custody trials. Are you keeping that pocket recorder handy with you at all times?


Edited for your protection.