I think it might be pushing it a bit to text the ILY right now. I say be happy with the cordial conversation. I had tried all kinds of letters and ILY's before with my W, and when they have that alien WAW probe embedded in them, it does nothing but push them further away.
You already sent her the "I miss you" text a few days ago. I am certain she knows your feelings towards her. Any more is just going to seem like pursuing or making her feel guilty. Try to put yourself in her shoes and see that she does not need those sort of words from you now.
If your M is going to have any sort of chance of being saved, your W is going to want to come back on her own - not be compelled by guilt or pleading to come back. If and when that day comes that she has an awakening, there really is not much for you to do other than live your own life for you and the kids. This is how you want her back - her initiating the desire to come back. What are the chances of her awakening and realizing your M is worth saving - not good based upon what I have seen here with others. However, there are those that seemed lost causes that miraculously were turned around. In most of those cases it was the WAS that initiated the path back to restoring the M.
