Please help me with this facebook problem easy ten points?

[Lili]

a few months ago i got a friend request from a person i didnt regonize so i ignored . a few days later my sister saw i had the friend request and told me to press on it so i did then it asked me if i knew this person outside of facebook and i answered no. after that i clicked on the person who friend request me and i saw that it was my long lost best friend's cousin but didnt friend request her back because i thought i could see her profile later but it turns out i cant. please help i really want to talk with my best friend again! i have tried many times after to friend request her again because i remember her name but just cant find her. PLEASE HELP EASY TEN POINTS