I think it's great that you sent her pictures of the kids. Even when things were at their worst between my W and I, I would text her a good night picture of the kids. I started this when she started to go off the rails in hopes that it would remind her of the two sweet faces that were waiting for her. At first, I didn't think it really meant that much to her because she was so cold most of the time. Then she told me one night that it meant a lot to her that I sent those pictures and that she had been saving all of them. When school started back up for them, I would send a good morning picture from each of them and she would respond to them. There have been nights and mornings where I haven't particularly felt like sending pictures to her and she actually texts me to ask why there wasn't a morning/night picture. (I always take one)
Anyway, it's good to hear that it seems to have been a positive for you!
M:35 W:31 S: 9 D: 5 M: 11.5 yrs BD: 5/13 W moved out: 7/13