Her high school class of all girls was more than enough for Abby to unleash her perverted fantasies. The limit of the ring's power, inability to alter the mind, wasn't an issue in Abby's class room because she knew that in an all girls only school, many of them would be slightly bi or lesbian as there were no boys for them to be attracted to. Plus as young hormonal teenagers' they would be more inclined to give in to their sexual desires.
Still she needed to test the ring's power on a person other than herself, so as the class was doing some independent study Abby focused on Becky, “I wish that Becky had bigger boobs.”
Now Becky was small in the chest department, and being in a private school with the same uniform, it was hard to hide how flat her breasts were. So when her shirt started lifting due to her expanding breasts, everyone around her noticed, including Abby. Becky sat back in her seat astounded at her growing breasts which stopped at c-cups, as a no bra girl her nipples were poking thru her shirt.
“Hey girls, what’s the commotion back there,” Abby feigned ignorance, as she probed for the class’s reaction.
“Nothing, we were just talking about the holiday dance,” a girl covered for Becky as the others around nodded in agreement. They were questioning Becky about her growth spurt the moment Abby pretended to go back to her grading.
Good, this was very good for Abby as now she knew that any changes she performed on her students, if they were concealable, that they would rather hide their transformations rather than get authoritative help.