I have a bit of a dilemma. My cousins started a very nice tradition last year of Christmas breakfast at their house. Because our family is so widespread, we have different families having dinners at their places. So the breakfast is a nice way to have a meal with members of the family you might not otherwise see. Unfortunately, last year was a bit of a disaster because they didn't have the right cookware to make a meal for 30 people. So a few of us had to rotate cooking constantly in order to have enough hot food for everyone.
As my Xmas gift to them this year, I have gone out and purchased a whole bunch of items that they can use not only for holidays, but also for their own parties that they like to throw throughout the year.
My dilemma is that their mother Aunt A, came over to our house this weekend and saw the large pile of items that I have been collecting to give to them. There are pots, pans, a griddle, serving platters, utensils, etc. She started to paw through everything and actually had the griddle in her hand before I came upstairs and saw her. She asked if she could have it and I told her no this pile was part of a gift. I actually had to take it out of her hand and place it back in the pile

. At that point she called me selfish and said that no one needed that much stuff and why couldn't I just go out and get another one. I repeated that it was a gift, and my Aunt O jumped in to beandip before
I beaned her with the griddle Aunt A and my grandpa left to hang out.
The problem is that she will see these items at her son's house on Xmas morning and know where they came from. She has no issue with either outright stealing of things or she will harass them afterwards to the point where they will just give her what she wants to get her to shut up.
I guess my dilemma is: Do I say something to my cousins about their mother coveting their xmas gifts or do I just let them deal with her as they please ? It would just really annoy me to find out that half of the stuff I gave them ended up at her place after the holidays.