Easier way is to download the Apple Store App to set up an appointment before going to the store. Sometimes they have way too many people in there and they'll keep you waiting for hours if you don't have an appointment.
use the Apple store app or walk in to setup an appointment, but if she has an iPhone already the setup should be very easy
Call the store
You can ask the greeters at an apple store or you can go online to schedule the genius bar appointment
Call Apple
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