I sure hope it's just a fluke and that Luna isn't in RF but if she is, please don't panic or despair. My Puddy has been in renal failure for nearly 5 years now and, although she does have her bouts, she's doing great! And she's operating on only one kidney now. The subQ fluids are a piece o' cake; if I can give them to Puddy, more affectionately known as the Pudilator, you'll be able to give them to Luna w/no problems. The first time or two is scary because it's new to you and her; after that, nah! Relax and know that all is well. We're all praying for you and Luna.