During the summer of 2001, Mimi joined her classmates on a trip to Puerto Rico to study the environment. She and Belle became close again, but she became even closer to geeky Kevin Lambert and the two nearly had sex on the island. With her newfound self-esteem, Mimi became determined to do the right thing and make up with Chloe. In fact, Chloe and Mimi joined forces toward to help Belle and Shawn get back together. She accomplished that task, along with high school graduation, and spent the summer with Kevin; they broke up at the end of the summer so he could go away to college.