Eleanor is truly grateful that Park stood up for her, and attempts to show him during this visit. At the same time, she doesn’t want him ruining his social life or hurting himself on her behalf. Eleanor isn’t like Park—she doesn’t have the same desperate need for approval he does—and when she tells him that she genuinely doesn’t care what anyone else thinks of her or her relationship with Park, she means it. He gives her all the confidence she needs.