I'm wondering if my practitioner is giving me enough time with Velashape for my treatments to be effective?

I'm just finished my 3rd of 6 tmts of Velashape today. I am treating the back of both thighs and buttocks. I'm concerned the practitioner is not giving each section enough time with the machine to be effective. My tmt today was 22 mins for all 4 areas, as were the 1st 2. When asked, she told me that tmts weren't time based, but heat based and that each section was done when my skin reached the target heat temp (which was 110 degrees on my thighs today, according to her). Does this sound right?