The US diplomat's wife who claimed diplomatic immunity after allegedly killing a British teenager in a crash has said she is "devastated by this tragic accident".
Anne Sacoolas, 43, wants to meet Harry Dunn's parents when they travel to the US this week to apologise, her lawyer said.
She spoke out on Saturday night after Mr Dunn's family confirmed they have arranged to meet her legal team in America "at the earliest possibility".
It is the first contact between the two parties since Mrs Sacoolas claimed diplomatic immunity and left the UK in the wake of Mr Dunn's death on August 27.
The 19-year-old was killed when his motorbike collided with a Volvo outside an RAF military base in Northamptonshire.
Mrs Sacoolas, who is reportedly married to a US intelligence official, was allegedly driving on the wrong side of the road at the time.
"No loss compares to the death of a child and Anne extends her deepest sympathy to Harry Dunn’s family," her lawyer said, in a statement obtained by ITV News.
"Anne would like to meet with Mr. Dunn’s parents so that she can express her deepest sympathies and apologies for this tragic accident."
Ms Charles and Mr Dunn met with Foreign Secretary Dominic Raab this week but said it hadn't helped them make any progress in their fight to get Mrs Sacoolas back to the UK.
"Mrs Sacoolas should do the humane thing: get on a plane and come back," said Ms Charles following the meeting.
"I still don't see how it can be humanely correct to get on a plane and run away from what she's done and try to continue her life."
During a phone call with Boris Johnson on Wednesday, US president Donald Trump said he was committed to finding a solution as soon as possible and sent his condolences to Harry's family.
The Prime Minister has said that although Mr Trump was sympathetic towards their views on the use of diplomatic immunity, the US are "very reluctant" to allow citizens to be tried abroad.
On Friday, Mr Johnson said America is "absolutely ruthless" in its safeguarding of Mrs Sacoolas.
A statement released on behalf of Harry's family said:"As if losing Harry was not enough, they now find themselves having to expend enormous time and energy, which they can ill afford, generating sufficient publicity to garner public support to persuade the US government to help achieve closure and return the driver Mrs Sacoolas to England to face the consequences of her actions.
"Sadly, all such efforts to date have failed. The parents, after a brief period of rest, are therefore now taking their campaign to the USA and will visit New York City and Washington DC over the coming days, engaging with the media and politicians as they reach out for support from all Americans and to ask them to put pressure on the US administration to do the right thing."