SG did you ask her to skip the happy hour? It seems like she took it upon herself to not go. Perhaps being clear with communication is what was missing. Her anger is for her to deal with. You could have offered to watch your S but she also could have asked you if you minded watching him. Again a lack of clear communication on both of your parts. I wouldnt worry about it too much. If she brings it up you can explain that you two weren't very clear and leave it at that.
Your W really seems confused as to what she really wants in regards to work. Tell her you support whatever decision she makes. She has to figure that out for herself.
Yes you are definitely mind reading with her putting her legs on you then pulling away.
Your W seems angry at times and its quite possible she may not respect you especially with her being sarcastic about you needing to get your sleep. Again there isn't anything you can do about her anger its hers to deal with. She took it upon herself not to come to you for help with with him. You said the right thing telling her she could have came to you for help. Its her problem she didn't not yours. If she brings it up again tell her she can come to you for help with him that you don't mind helping and leave it at that.
Your W reminds me of my W when it comes to getting angry and sarcastic things to say. This morning my W called just to give me grief about money I've taken out of our bank account. If you could have heard her nasty tone but I just let her vent and just said ok then she hung up on me. It [censored] when they are like that with us but what good does it do to go back at them. Someone has to change that dynamic. Be the bigger person SG
M 44 W 43 S 23 S 15 INILWY 9/11 Divorce Mediation started 3/13 June 30 the day W is moving out