Maddy!
Lommy! Why was it
Stan, then?
Sally makes a lot more sense given this pattern,
Katty!
(You have the problem, however, that it's not that "kosher": your name is not long enough.)
Speaking of that, I think
Thin won't have been better,
Rubby
(of course I originally thought Runny, but Rubby is more complex and describing it all. Or then, Russy... or Russby... but that's leaning away from the pattern. Okay, I am already overdoing it.)