From her speech via Axios:

So on November 6, I said at the podium we were not going to declare anything till every vote was counted. And on November 16, I decided to acknowledge the states of the election but I refused to concede. Because here’s the thing, concession means to say something is right and true and proper. I am a good lawyer, and I understand that the law of the land said that Brian Kemp became the governor that day. And I acknowledge that, but you can’t trick me into saying it was right. And you can’t shame me into saying what happened should’ve happened because in the state of Georgia black people faced hours long lines of up to four hours waiting to cast their ballots. 53,000 people were held hostage by a system that a federal judge said was racially discriminatory. 53,000 people. 90% of whom were people of color and 70% of whom were black. I live in a state where 1.5 million people got purged including 600,000 right before my opponent threw his name into the ring. They closed 214 polling places. They rejected absentee ballots at an unheard of rate. They said if your signature didn’t match then your vote doesn’t count. Well my signature doesn’t match from Kroger to CVS, but my citizenship doesn’t change. And so in response to what I believe was a stolen election, and I’m not saying they stole it from me. They stole it from the voters of Georgia. I cannot prove empirically that I would’ve won, but we will never know. And so what I demanded on November 16 was a fair fight because you see voter suppression is as old as America. It is baked into our DNA, but so is our ability to fight back. That is also who we are. We are a nation constructed of people who understand our rights have to be fought for every generation and sometimes when we fight we think we won. We just got a pause, and we’ve got to come back efforts redoubled because those that who want us to be silenced won’t stop till we shut so we have to shout louder and longer and stronger than they’ve ever expected. 

(my emphasis)

In another recent speech, Abrams said: “I did win my election, I just didn’t get to have the job.”’

Earlier from me: Why Democrats Should Not Call the Georgia Governor’s Race ‘Stolen’, Slate, Nov. 18, 2018