Summer chaperone for 13 year old taking Manhattan subway to / from ballet school

I am a parent seeking a mature, responsible college student to chaperone my 13 year old daughter to and from the ballet school she will be attending in Manhattan this summer. Pickup will be on foot at 111th and Broadway, walk a few blocks to subway, approx 25 minute subway ride, then walking a few blocks from subway station at 17th and Broadway to American Ballet Theatre building. Dates and times will be approximately 8:00-9:00am and 5:00-6:00pm, Monday through Friday, June 26 through July 29. There can be some flexibility for days off when family are in town and can do it. Pay $25-$30 per hour or $50-$60 per day. We particularly welcome applications from Barnard and Columbia students as that has worked well for our family in the past. Thank you for reading!