I’m a parent, not an AO, so I can’t read their minds, but my reaction would be to take one of two approaches.
Either don’t try to explain the sophomore year grades, just keep working hard and focus on the steady improvement. I do know that schools like an upward trend in grades. Not as much as they like 4 years of terrific grades, obviously, but steady improvement, continuing that 95+ record through the rest of the year and into senior year will look good. School’s don’t just look at the overall GPA, they also look what you did when.
Second choice, have the counselor, not you, briefly discuss the anxiety in his letter. He should probably say something to the effect that you had been bullied, it affected your grades that year, but you pulled out of it and your junior and senior grades are truly representative of your academic abilities.