It was then that she was apprehended by two US Border Patrol officers who told her she had crossed illegally and had been caught on camera.
It was at that moment two USA border patrol officers stopped Ms Roman, telling her she had crossed illegally and had been caught on camera.
"They put me in the caged vehicles and brought me into their facility", she told CBC.
The US border agents stopped Roman and said they caught her crossing into the US on security video.
However, a U.S. Customs and Border Protection spokesperson said her actions were still illegal.
US Border Patrol agents captured a French woman they said crossed the US-Canada border while she was jogging.
Roman had been visiting her mother in British Columbia to work on her English when the incident occurred, according to a CBC report.
Her mother lives in North Delta, B.C.
For example, Canada's current policies around the border have not only led to a massive increase in arrivals but have also created an environment in which extremely risky members of gangs such as ms-13 are able to cross into the country.
At the time, Roman said she did not have any government-issued identification or travel permits with her. -Canadian border, which measures 5,525 miles - the longest in the world - but isn't marked in the traditional way with a definitive boundary, such as the wall and the Rio Grande River along the U.S.
"It is the responsibility of an individual travelling in the vicinity of an worldwide border to maintain awareness of their surroundings and their location at all times to ensure they do not illegally cross the border", said a CBP spokesperson.
Documents issued by the USA government and shared with Radio-Canada confirmed that Roman was discharged on 6 June. "They asked me to remove all my personal belongings with my jewelry, they searched me everywhere".
"It's like a trap because if we don't see a sign, you can cross the border very easily".
She said that when she realised how serious it was, she began to cry.
Cedella Roman, 19, didn't know it at the time, but as she ran southeast along the beach on the evening of May 21, she crossed a municipal boundary - and, shortly after, an global border.
"This applies regardless of whether or not the individual claims to have inadvertently crossed the border", the department said.
"It is the responsibility of an individual travelling in the vicinity of an worldwide border to maintain awareness of their surroundings and their location at all times to ensure they do not illegally cross the border".
Authorities received her "travel documents" three days after her arrest, but it wasn't until days later that both Canadian and American immigration officials determined she could enter Canada. Roman's family is unsure whether she will ever be allowed back in the United States.