You will get under her skin even more by just enjoying your life.
Make the most of what you have been given.
I think it was Sandi who once posted.. The WW mindset is a total rollercoaster, as although they are acting on emotion, they are have fear.. They do not think about consequences, but when confronted with them ( ie no names of Christmas cards and people asking questions ) they panic and react - ie in your case, complaining to D..
Ironically, ive just spotted BD date on your sig.. Mine is exactly 2 years prior to you - 8th December 2018
Also, she would have been irritated if mark HAD included her name on the Christmas cards! With WWs there is no winning.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018