the way she made those advances on you, hints that
1) she might be lonely due to her bf in NS
2) she needs company and is ready to ditch her bf for a guy who
will stay and take care of her like you did
3) she already don't mind the gossips (thus it's obvious) just
carry on, there's still room to like make up with her and than see
what happens after which.
to be able to find such a female fren is hard, yet consider lucky
and at the same time, dangerous.
up to you to decide..
but if i were you, i'll go for it. just talk to her, and see if
there's any room for progress, anyway, it's silly of you to quit
the job (i presume it's just to avoid her?)