Save Trinity's Life

I am a high school English teacher supporting my wife, two beautiful daughters, and four dogs on only my salary. I'm raising money for my dog, Trinity, in an effort to save her life. She's 11 years old, and she's a fighter--having already overcome parvo and heartworms in her lifetime. Yesterday, she was diagnosed with a bone tumor in her right hind leg. (You can see the bulge on her leg in the picture.) The only solution is amputation of this leg. The vet's estimate for this procedure is $750, which does not include a chest x-ray and other unexpected things that might need to be done, including after-surgery care. Overall, I expect the cost of her treatment to far exceed $750. Trinity can't walk on this leg, is in a excruciating pain, and isn't eating.

Unfortunately, I don't have the money to help her.  My father-in-law unexpectedly passed away less than a month ago. My family is still recovering from this, both emotionally and financially.

Trinity is a very sweet animal, and it would mean a great deal to me to provide relief from this pain. I'm requesting the funds as soon as possible before the tumor spreads to other parts of her body, which would force me to do something that I'm trying to avoid at all costs. I humbly and deeply thank you for your time and consideration in saving Trinity's life.