Are people really taking offense to her wanting immigrants to have a Merry Christmas with love, happiness, and family? Like how Christians are generally taught?
Or is it that she correctly points out that the people in the story about the holiday were immigrants themselves? Because? How is that wrong?
If any of what she said offends anyone, I'd advise to step away from the political trash sites or channels, have a hot cocoa, and try to just enjoy the spirit of the holiday.