Here's what would be awesome to be able to do: Interview every pediatrician in the area until you find one who actually understands that "retraction" means ANY manipulation of the foreskin back toward the shaft. Then, write your ex-doctor a letter explaining that, happily, you have found a physician whose training and education and cooperative, evidence-based approach suit yours and your children's needs to a "T." Explain that, although you are happy with your new doctor, you still worry about the potential for harm to other intact males in her practice, due to her mistaken notion that it somehow isn't "retraction" if it is only a "little bit." Therefore, you are asking the DOC to send her their standard letter in order to emphasize the seriousness of manipulating non-retractile boys' foreskins (and it IS serious; even though the likelihood of harm from the tiny amount of manipulation she does during a visit a couple times a year may indeed be very low, for parents to see her pulling back and messing with the foreskin could very well give them the idea they can and/or should do the same, whether to "check on things" or to clean), in the hopes that she will discuss this further with some of the outstanding, helpful, and knowledgeable physicians in that group.
I hope you really CAN find a doctor who understands that no retraction means NO RETRACTION! All the best to you.
You can take being dismissed from her practice as a badge of honor!