>>33849336 (OP)
It's up to you, but it's very important to understand that she doesn't want >(You). She just doesn't want to be alone and >(You) happen to be the best option in her life.
If you're really done with this chick, set boundaries. Maybe even start visibly talking to another girl to let her know it's over. Just don't make the same mistake I did and take her back, because you'll just be spinning your wheels until eventually she decides to leave you anyway.