if you have saved her number on the phone and she use the same number on the facebook phone contact it will always come up on friends that you might know,its not the email adress
,u might let her know about this cause im sure that she wanna be as discreet as she can about her private life,try to type her phone number 00353... on the facebook search and see if her facebook profile comes up
.i had my work number there and one of my friends from forums let me know about this and i was very thankfull.i will never like that anyone know details about my private life xxx