Cool notes above from others.
I'll share my perspective. I think it depends and there are exceptions, but---the positive benefits of continuing to have a part time job should not be discounted or dismissed - self awareness, feedback, learning to work with others, seeing that life is good, but isn't always fair - plus the aforementioned time management/organization skills, good experience, and imo yes it looks good on applications.
recommendation? You'll of course do what's best and that's that, but if she can, see if she can keep the job but scale back during the school year - look to take a shorter weekend shift and then work more in the summers, to average a few hours per week for the year. Or if that is too much, go to being an on-call backup during the academic year and try to pound hours during the summers.
With respect to the kids who are in the top 1/10th of 1% at something - top HS athlete in the nation, perfect/perfect on ACT/ SAT and GPA or whatever, simply, the regular rules don't apply. I agree, it doesn't matter - coronets will blare and carpets shall be rolled-eth out. The rose petal ladies and amiable fellow from Coming to America shall throw said petals ahead of the steps those cherish-ed one's arrivals. Jolly good for them, but my advice I guess is for the rest of us, because I've seen a lot of kids try to be that by doing nothing but school, Kuman, and studying and fall a little short, and to them without jobs, sports, activities, despite having higher than average grades and SATs, they fall hard because they are not competitive. Just a perspective shared here.
There's another aspect which is the magical pride/ empowerment I see when a kid has earned their own money and can do what she or he wants (like say fly to Iceland for a weekend for example to go see about a girl or whatever) without having to ask someone else for the money to do it.
PS: What did we call a person who graduated at the bottom of the class at Med School? DOCTOR. Meaning having the continuity of a job and keeping it/ advancing in responsibility can happen in a 3 hour per week job - maybe not in title or as fast, and yet they can check the box for steady employment on their app just like my awesome but nutty DS who worked about 20 hours per week in addition to an insane academic/ sport/ service schedule. Well, the app will specify if you worked 3-9 hours, or 10-20 or whatever, but I really don't think that matters much at all (again imo).
good luck to your child and kudos to you for seeing guidance to help - we're all in this together/ trying to figure this out - hope this helps.
very respectfully,
Hermie, Sr.