I am helping two new quilters........Start with the basics, don't assume they know anything.
Is she wanting to quilt or just learn to sew, or repair items, or replace buttons. Make her define her needs, then you will have a place to start: learning how to thread a needle, sew on buttons, or cut out fabric for a placemat, etc.
My two ladies had 'help' from others and never covered the basics! [how to use a rotary cutter, thread their machine, etc.]
Good for you for being a mentor!!!!!