Please help Betty she needs SURGERY

This is not about us;  it is about our beloved dog Betty, she a beautiful brindle & white Boxer, 10 years old and has been with us since she was 8 weeks old. 
This week she was diagnosed with a Mast Cell Tumor along with dental problems (a normal condition in Boxers seem to get but it's painful).  She needs surgery immediately which is going to cost just under $700.00, we have the estimate from the vet which is attached to this story.
Betty is a fun, loving dog and even though she is sick she still loves being outside, playing with toys, playing in the water, she loves to swim, loves to roll around, she loves her rope, she loves our children and our cats and to get in the trash! 
We would be lost without her in our lives and this is why we need your help to save her.  
I work a full time job, we have 3 school age children, our rent as you can imagine is sky high living in Longmont and we just do not have this much money.  
Please help us help Betty if you can,  please share her story, we would greatly appreciate your support in anyway and forever be thankful.  THANK YOU; all we need and want for Christmas is our Betty.
#helpbettyboxer