Yes, it is easy to forget you are living. That is for sure.
I'm pretty sure my x-inlaws didn't think too much about it, to tell the truth. Remember, she's painted me as some enormous a-hole, so this guy will look like a saint. Plus, she's still in her nicey-nice mode and all seems extremely peachy right now.
If they did have an issue, they wouldn't tell her. They are people who completely avoid conflict of any kind and both her mother and sister are passive-aggressive and manipulative in getting their way. XW's father runs the house and everyone is terrifed to stand up to him. However, if they think their daughter is careening off the tracks, they won't say anything to her. Odd and a bit disfunctional which is where the problems of my XW stem from. I only pray that one day she'll face her demons.
On the other hand, the thought of being so quickly replaced and having her family move on so swiftly after our 12 years together does eat at me a bit. It makes me sad as well as angry at XW for her running away.
As for my D, your words are kind and inspirational. I hope to be a rock for her and have her know that I will always be there for her no matter what. That is the least I can do for my little girl.