Her brother was a student during Kelly's first year, she was on the sideline with Selena Gomez for a game or two all decked out in ND gear. Her brother got made fun of by the kids in his dorm and transferred to Vanderbilt.
I can shed some light on this.
Whether it is true or not, Taylor's younger brother, Austin, was known to the students as a bit of a douche.
"Swift" as he is affectionately known around campus, was portrayed as a character in a Saturday Night Live-esque variety show put on by Keenan Hall called the Keenan Revue (students and alumni should be familiar with this). Apparently "Swift" didn't like how he was portrayed, although most students agreed that it was all in good-hearted fun. He then proceeded to have his parents write a letter of complaint to the university. The Keenan Revue was then cracked down on, and subsequently stripped of many of its humorous skits due to "questionable content."
Austin then transferred to Vanderbilt for his Sophomore year.
He then transferred back to Notre Dame for his Junior year (this year). I assume he found that the students at Vanderbilt were no nicer than those at Notre Dame (surprised? If there is a campus in the whole world where people are nice to you no matter who you are, it's this one).
In conclusion, I think Taylor may once again be rooting for the Irish.