Maggie Needs Immediate Medical Attention

I adopted Maggie on May 1st 2013; she was in rough shape and had just barley survived having her front 12 incisor teeth taken out. When we adopted Maggie she weighed about 45lbs (she is now 70), had severe hair loss on her back, and had a vitamin b12 deficiency. We had to give her b12 injections every week in order to help her gain weight and become healthy once again. Of course her initial appearance worried me-- What if she has a lot of medical issues down the road? I don't have that kind of money...-- but the SPCA assured me that her problems were simply because she was a stray.
Unfortunately, a few days ago I noticed that Maggie had broken her top left canine tooth. I immediately started researching broken teeth and calling multiple low cost veterinary clinics in hopes that it would be an easy fix... but unfortunately they will have to put her under anesthesia in order to do her dental. The entire process will cost anywhere from $800-1200... It might not seem like much but I am a full-time student, I don't have a job, and my parents do not approve of me having her. If Maggie doesn't get the surgery ASAP there is a good chance that her tooth will get infected causing more problems and cost in the long run. Maggie is everything to me, I can't imagine her being in this much pain. If you could spare a few dollars for this beautiful animal I would be ever so grateful.