[1][2] That August she was heavily active for the WSPU, campaigning at the Bury St Edmunds by-election with Gladice Keevil, Nellie Martel, Emmeline Pankhurst, Aeta Lamb and Elsa Gye.

[1] Over the Christmas period Barrett was again busy campaigning for the WSPU, with Pankhurst, Martel, Lamb, and Nellie Crocker at the "rough and boisterous" staunchly Liberal Mid-Devon seat at Newton Abbott,[4] and next time in the lead up to the Ashburton by-election.

In June of that year she was the chairman of one of the platforms at the Hyde Park rally,[4] but the work took its toll on her health and shortly afterwards she was forced to temporarily step down from her position to recuperate, which included a period of time at a sanatorium.

[1][8] In 1910, Barrett was chosen to lead a group of women to talk to the Chancellor of the Exchequer, David Lloyd George, regarding the Liberal Party's role in supporting the first Conciliation Bill.

The meeting lasted two and a half hours, and by its end she was convinced that Lloyd George had been insincere over his support for equal voting rights and believed him to be against women's suffrage.

In 1912, Barrett was selected by Kenney (who saw her as a 'highly-educated woman, a devoted worker'[4] to help run the WPSU national campaign), following the raid by police on Clement's Inn and Christabel Pankhurst's subsequent flight to Paris.

[2] Barrett moved back to London and within a few months she was given the role of assistant editor of the WSPU newspaper, The Suffragette, on its launch in October 1912.

[2] She travelled under cover to Paris to meet with Christabel Pankhurst, and when speaking to her on the phone she recalled how she "could always hear the click of Scotland Yard listening in.

[7] In April 1913, the offices of The Suffragette were raided by the police and Barrett, Beatrice Sanders, Agnes Lake, Harriet Kerr and Flora Drummond were arrested on charges of conspiring to damage property.

[10] On leaving Scotland, she returned in secret to London; she hid at Lincoln's Inn House where she lived in a bed-sitting room there,[10] only getting air on the roof.

[4] Barrett continued to edit The Suffragette, but she travelled to Paris to discuss the future of the newspaper with Christabel Pankhurst after its offices were raided in May 1914.

[12] After the passing of the Representation of the People Act 1918, in which some women within the United Kingdom were first given the right to vote, Barrett busied herself in continuing the fight for full emancipation.

[14] In Barrett's obituary in the Women's Bulletin, it read that the raising of the statue "...stands as a permanent memorial to Rachel's organising ability.

They stayed in New York and San Francisco and were recorded in the 1920 census as living in Carmel-By-The-Sea in California, where Wylie was classed as the head of the household and Barrett as her friend.