She served in the organization, trying to achieve suffrage in the state of Virginia, until 1915 when she left work with fellow Quaker Alice Paul, an organizer behind the Congressional Union for Woman Suffrage (CU).

[2][1] In 1916 Meredith was chair of the Virginia branch of the CU and gave the presidential address at the annual meeting.

In 1917 Meredith organized Virginia women's participation in picketing the White House for suffrage.

The following year Meredith was arrested multiple times in Lafayette Square, across from the White House, for protesting the government's failure enacting an amendment granting voting rights to women.

Her photograph was featured on the cover of the September 22, 1928 edition of the NWP Equal Rights bulletin.