Captiva Christmas by Annie Cabot is the fourth book in the Captiva series, and takes place during the Christmas holidays in Florida. Of the four books I have read so far, this is my least favorite.
Trigger warnings for a cancer diagnosis and for domestic violence, although neither is over emphasized. Another possible trigger is the use of the lack of communication/refuse to communicate trope between one of the married couples over possible infidelity.
Maggie is missing her grown children who still live in Massachusetts, and wants them to come home for Christmas. When one of her married daughters shows up unannounced with her children, Maggie calls a code red to get her other children to come to Florida.
Domestic violence shows it's ugly face, and another daughter, expecting her first child, is involved because she is trying to help the victim. Maggie is faced with a cancer diagnosis, and is in the process of seeking a second opinion regarding the best treatment options.