Her personality is definitely the key. Is she already a natural leader that others love? This is what she will need to be - even if not always loved.
One of mine was an RA for 3 years, always choosing freshmen, and always loving it. Tales he would tell included being with an OD person at the ER, organizing trips to see the city his college was in so students would learn how the bus system worked and what “college student loves” were out there, enforcing fire codes, quiet times, and substance rules, and guarding halls/dorms during major events. He was always among the first in and last out of residence halls for breaks.
He loved his shepherding job and made oodles of friends from it. His last year he won a college-wide award for it with the voting coming from both students and staff (he won both groups). But among the tales he told were stories of those not cut out for the job, including one who ended up quitting because of the stress.
Don’t just look at the free board (all he got from it). Consider personality and job fit as paramount. My other two had no interest in the job (different colleges, but “same” job). That’s ok too. They have other strengths.