A Christmas tree, and a Word of Appreciation
May God bless our efforts!
Unfortunately cults major in minors. "What??? You had a wreath on your door!!! I'm reporting you to the elders!" etc. As if God cares which day believers choose to celebrate the entrance of the Savior into the world. Christians could celebrate Christ's birth any and every day of the year. Sounds like your wife has found Christian freedom.
Regarding the Trinity...at least your wife will be sure to give Jesus the same honor as the Father and will be free to worship Him as the angels were commanded and as disciples did repeatedly.