yah like everybody said the learn yo lesson part of it is the number one.
but it dosent get your money back.

so now your following actions will be based on how much value you have for this person.
if shes hiding out and beating around the bush about paying you... chances are your friendship (whatever there was) will never be the same. accept that first, and disregard and personal feelings you have for her.
If you still want your money back gotta think is it worth it to invest time and possibly money to get it back.

personally if its in the 3 digits.. .sucks but not worth the effort.
if its 4-5, this bitch gonna find herself in a saw-like environment.

anyway since its not that harsh... lets say harrass her ass like there is no 2moro.
Go to her house and walk her ass to the bank.
No need to involve her parents or relatives or even friends, because this is business strictly between you too.
save the face, weather you get yo money back or not... people will later acknowlede you know how to handle a situation and wont fuck around.
good luck.

its a write off just take it as a learning experience.

Lend money to those people and you'll learn the same lesson as the OP. You won't get your money back from your kids/spouse either :p

my gf once let one of her friends use her credit card to sign onto a cell phone plan.

you probably know where this is going, decided to ditch the phone after a few months and the guy was off radar for a while. she gets his phone bills so she just started calling repeat numbers in his bill. the guy was a cmplete douche, but eventually got the money to cancel the contract.

it's frustrating to see nice people willing to lend out their own money out of the goodness of their heart only to get screwed over by douchebags that don't have the consideration to take responsibility.

i wouldn't give up. call her from another phone number and get her to meet in person. it should be understandable to most people that a few hundred bucks is worth getting upset over.