Greetings dear friend @paulag.
Just what you do involves the true spirit of Christmas.
Share with family and friends, give instead of receive, meet with loved ones that we have time without seeing. But above all create an atmosphere of joy and fellowship.
Religious inclinations no longer apply in this case, because Christmas has already become a universal concept. Of course we will find cases of people (like your friend) who are very strict about their religion and then they will not celebrate these holidays, but in the same way I am sure you will find a way to involve them in the atmosphere of joy that you will achieve in your home .
Hohoho ... Merry Christmas!
All best, Piotr.