Hang in there bro, this is where you have to continue being the man she wanted to hug again. I'm not sure from the texting how the conversation was tone wise etc or the subsequent one regarding your W and D11 chatting about the meal, but, I can see similarity in most threads. When the WAS seems to let their mind wander from the hate and they start enjoying themselves and having feelings again, it's as if when they realise, the remind themselves it's not for good. so to combat the positives they have given you, they have to be double nasty to get the control back in the sitch and knock you back to the ground again.
I'm seeing it myself at the moment, W ok all week, then says life is unbearable when we go to MC !!!
GL Bro, hang in there. Do something nice by yourself this weekend to take the mind off and refuel, you've had a rollercoaster of emotions this week