What do you feed her and how much?
Also she could just be lean, if you post photos looking down directly at her and a side shot you can get opinions on her physique
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - male GSD - born Jan 26, 2012
Koda & Zazu - 4 year old male cats