The book is The Matzah Ball by Jean Meltzer. It's an entertaining and inspiring story of a young woman, the daughter of an orthodox rabbi, who is infatuated by Christmas and writes and sells books about Christmas romance stories under a pen name.
Her life is disrupted when her romance novel publisher gets tired of Christmas-themed novels, and the frenemy-guy friend from her youth is comes to New York to produce the fabulous Matzah Ball, a Jewish singles event.
This event will be in-person at the home of a Makom Shalom member. See the TWAMS weekly newsletter for details.