This is a very unusual coloration. If she had no white on her, she would be a "tortie". If her colors were solid black, red (with faint tabby), and white, she would be a calico. But she has large tabby patches AND white and red/orange, which qualifies her as a "torbie"

My Abby is a torbie, too. She is 22 and she still races about after visiting the box.

May Patches have as many healthy happy years!