C.W.
This is going to sound insane but wait and take her to a local piercing/tattoo studio. The reason I say that is it is safer and cleaner than the mall places.
Please read the following articles.
http://www.safepiercing.org/piercing/faq/#guns
http://www.steadyhealth.com/articles/Ear_Piercing_by_infa...
http://www.homiegfunk.com/gunssuck.htm
http://tattoo.about.com/cs/psafety/a/piercing_guns_2.htm
http://www.freewebs.com/antipiercingguns/petitionlink.htm