If it is a matter of you not knowing the kids,or they live out of state,she might just be excited and wanting to share her excitement with you.
If there is a remote possibility that the above might not be true,and she is in fact trying to rub it in..then maybe you could reverse it on her. Start asking her about the plans for the wedding... ie: have you found the right caterer yet,or whatever else you know they have been working on. Once she answers that question,then quickly move on to another subject that does not involve the wedding.
That way you are showing that you care enough for her to ask,but don't care enough about the wedding to keep hearing about it.
If it keeps going on,then you might want to talk to your dad about it..it sounds like he has really been there for you,and hopefully he will then.
Keep us posted on what is going on..
Chronic Depression, Panic Attacks,Anxiety Attacks,Anorexia
Please remember,I am not a professional..I am just a person who is also fighting depression.
I know I'm in my own little world, but it's ok. They know me here.