I am thinking a couple of things. While I know you have a real good handle on this, our hearts feel what they do. So, please be sure to protect yours.
I think it may be a good idea for you to pull back just a bit. You wrote and said what you feel, he read and heard it. No need to say it again for awhile.
As far as his daughter sending you that stuff, be careful there. That can come back to bite you later. I know you want her to feel she can come to you, but, that is still her father, ya know?