W just texted me and asked what the plans where for tonight, so I told here what we were doing. She then asked me what expectations do the girls have for tonight and told her none as I never mentioned her coming over or any plans. She then said I don't know if there's a point in her coming over then. I told her that she has not come up in conversation and it is strictly up to her on what she wants to do. W indicated that she would pass then and we just discussed the coordination of her dropping off the gifts. There was no way I was going to tell her she needs to be here, etc. Her choice her decision, not mine.
I then told her we can coordinate tomorrow for a time for her to get them. She texted back and asked me to take pictures and videos of them opening up gifts.
I think you handled the conversation great. It's not for you to maintain your W's relationship with your children. Have a great holiday season.