Please help Rizzo with medical expenses.

2012, six months after my first girl at almost 16 year old sweet Bessie passed away, I finally decided upon suggestion to honor her by saving another life. I didn't know it, but scrolling on Facebook led me to the cutest, sweetest face I have ever seen. I decided right then she would be mine. Two days later (after driving to Long Island from Manhattan 3 days after Hurricane Katrina), she was. Rizzo and I are in love. Of all the people in the world, she is my favorite and boy does she love her daddy!She loves to run and play at our dog park, can sit in the sun for hours at a time soaking up the rays. Raised by two male cats, she is the most gentle, sweet baby one can imagine. I love my Rizzo baby. Rizzo for the second or third time has a UTI. Previously antibiotics worked quickly, but not this time. My wonderful vet at Brooklyn Veterinary Group wants to go ahead with x-rays and what not with an estimated cost of $326 to $726. As a Certified Nurse Assistant living paycheck to paycheck in NYC, this is a very hard emergency expense for me to handle. It's breaking my heart. We didn't learn about pet health insurance until she was too old for acceptance.