I emailed Widow earlier.
Being the awkward sod that I am, I did it my way - but I did take into account most of the advice I got earlier in the thread.
The first message I got across was that I was going to be travelling an awful lot over the next while. This is a bit of white lie. For instance, I am going to my daughter and husband in New Zealand, but not for as long as I intimated. My purpose in this, was to give her the feeling that this guy was not going to be around expecting to up the ante - i.e. give her the feeling of space.
I did not allude at all to the photographs and only mentioned Italy in a backdrop kind of way.
When I put my mind to it, I can write in a fairly humorous fashion and did it in a self-deprecating way. I gave her bits of news on stuff we had spoken about and brought her up to date on family stuff that she would remember.
Touched on Christmas and how difficult it is for my daughter who immersed herself with my wife in the whole festive thing.
Overall, I did it in a free wheeling kind of way - in a conversational tone.
I put in three "hooks" which hopefully will give her the opportunity to reply in a non-agenda way.
No hugs, no kisses, no over familiarity, no smileys. Just hope that my humorous approach came across in a warm way.
Just wait now.