At Peace Tree Brewing on Friday night, Shireen Carter, an attorney in Norwalk, was among the hundreds of people who waited in Warren’s now-famous selfie line. But she also had something to show the senator: a one-page summary of her student loan debts from law school. As of that evening, she owed $280,075.58. “She gave me a big hug and said that we were going to fix that in nine months,” Carter said after the exchange with Warren, who has a plan to forgive most student loan debt.