Alexander has a Bachelor of Business Administration from Howard University,[2] and did graduate work at Trinity College.

On May 1, 2007, Alexander won the special election to succeed her political mentor Vincent C. Gray.

Alexander lobbied other state delegations for DC voting rights at the 2004 Democratic Convention in Boston, Massachusetts.

[6] After losing her council seat in 2017, Alexander started a health care consulting practice.

[8] Alexander opposed DC's Death with Dignity legislation that would allow terminally ill patients to end their suffering.