"I don't really know if I can cheer against the Badgers; it would kind of injure me," said Katherine, a 2008 Texas Christian graduate. "We'll see how it is when we get to the stadium. It's definitely causing me some inner turmoil."
Sarah is also being pulled between supporting Katherine and rooting for her alma mater.
"Outwardly I'm trying to support [Katherine} and be really nice, but inside I really want Wisconsin to win. At the end of the day, I am a Badger," said Sarah, a 2008 Wisconsin grad.
The Beattie family is hosting its annual New Year's Eve party the night before the game. The party is expected to draw around 150 people, including both Wisconsin and Texas Christian faithful. A few hours after the party ends, the family will head to the Rose Bowl to tailgate the game.
Katherine's inner turmoil will be on full display New Year's Day. She's made a shirt specifically for the Rose Bowl Game. The shirt is purple, Texas Christian's primary color, with Wisconsin written across the front.
"I look at it like I can celebrate either way. I'll be happy if either team wins," Katherine said.
The rest of the Beatties are attempting to be as fair to her as possible. The family's La Cañada home is decorated with equal amounts of Wisconsin and Texas Christian paraphernalia. Andy has even declared himself a Texas Christian supporter for the game.
Still, this newly-founded Badger/Horned Frog rivalry has made for an interesting family dynamic.
"It's been fun being able to joke around with each other with the rivalry we have going on," said Lauren, who was a princess in Tournament of Roses Royal Court when Wisconsin played in the 2000 Rose Bowl Game.
"There have been a few jokes here and there, but it's all friendly. It's going to be an exciting game. Fortunately for us, the Beattie family will win," Andy said.
All jokes aside, the Beattie family feels lucky to have the rare opportunity to see this game together.
"This is literally a once-in-a-lifetime opportunity," Sarah said. "The stars just aligned perfectly. Both teams got their lucky breaks along the way and won the games they needed to. We are just so lucky to see this game together as a family in our own backyard."