$74.99 for a cleaning here in madison. this is what I paid for my fancy babylock to have it cleaned a couple of months ago. no repairs.
I like joes answer and his pricing, sounds reasonable. call around to any local shops and see what the going rate is. you may want to undercut a little, due to your inexperience. parts... I would again call or go online and see what they would cost and this is what you would charge her.
make a couple of bucks. then you can buy another machine. hehehe