The mother of Heather Heyer, the woman killed when a car plowed into a crowd of counterprotesters gathered to oppose a white nationalist rally in Charlottesville, Virginia, says she has "no interest" in speaking with President Donald Trump.

Susan Bro told ABC News on Thursday that she doesn't want people to politicize and take advantage of her daughter's death for their own agendas, and that includes the president.

"I understand that President Trump wants to speak with me ... and it's not that I'm trying to be calloused, it's that I have no interest in speaking to politicians just to hear them say, 'I'm sorry,'" she said. "If I felt like that's all they wanted to say, that would be different, but I feel like I'm wanted to be used for political agendas and I'm resistant to that."

Heyer, 32, was killed in the protest clashes last weekend that surrounded the planned removal of a statue of Confederate Gen. Robert E. Lee. Dozens of people were injured, and two Virginia police officers also were killed in a helicopter crash linked to the violence.

A funeral for Heyer was held Wednesday.

Bro reportedly released a statement earlier this week that thanked Trump for his Monday comments condemning right-wing extremists and neo-Nazis. But she told ABC's Robin Roberts on "Good Morning America" on Friday that her opinion changed after she heard additional comments by the president and watched news coverage regarding the protests.

"I hadn't really watched the news until last night and I'm not talking to the president now, I'm sorry, after what he said about my child," Bro said. "It's not that I saw somebody else's tweets about him, I saw an actual clip of him at a press conference equating the protesters, like Ms. Heyer, with the KKK and the white supremacists."

It's unclear what clip Bro was referencing. Critics have accused Trump of falsely equating white supremacists and counterprotesters in remarks he made during a combative press conference Tuesday in New York, in which he returned to his stance put forward Saturday that multiple "sides" deserved blame for the Charlottesville violence.

He did not appear to explicitly name Heyer during the event, though he said he had heard she was "an incredible young woman."

Still, a handshake and an apology "can't wash this one away," Bro said. And her message for Trump was clear: "Think before you speak."

Bro also said she is dedicating herself to moving "forward Heather's mission."