While W's request was ABOUT your D, the request was not FOR your D. Your D should come first in everything, but this particular case your W was asking about your D as a way to interact with you.
If she does not have photos of her D on her phone to look at when she misses her that's weird.
You didn't do a "bad" job here, but wanted to draw that distinction so you're aware in the future. You should absolutely be present and communicative when you're communicating about your D's well being. But in this case it was really just serving to make your W feel better. Your D did not gain anything from this interaction. I doubt she even knew about it, right?
Next time you could let W know, "D is doing very well today" and leave it at that.
