It's rude not to speak to one's siblings.
Katie is going to Thanksgiving dinner at her parents house and her sister will be there who she is angry with.
Katie wants to avoid fighting during the holiday.
Katie approaches her sister ahead of time and talks the issue out with her.
Katie does not speak to her sister the whole time she's at Thanksgiving dinner.
The family is able to have a nice holiday dinner together.
Katie's family can sense the tension between them and it makes dinner awkward.