Donae Anderson, 21, was arrested and charged with first degree murder after she was identified by police.
Police say Anderson and the victim, Raynesha Hunt, were arguing in the 4800 Hazelwood Avenue when Anderson shot Hunt. Hunt later died at Johns Hopkins Bayview.
A repeat offender was also arrested in connection to a weekend shooting.
Marcus Joyner, 26, was arrested and charged with first degree murder in the death of Tony Tingle. Tingle was shot and killed in the 1300 block of North Stricker Street Saturday.
Both Joyner and Anderson are in custody at Central Booking waiting to see a court commissioner.