Tameca Walker, 52, was arrested Monday and charged with two felony counts for a duplex fire at 2936 S. Rimpau Blvd. on April 21.
Authorities say she poured gasoline on the outside of the building and on the ground before using a crowbar to break a window of the building. She then allegedly ignited the vapors of the gasoline with matches.
Officials say three people had to jump from a second-story window to get out.
Walker was taken into custody without incident, and a loaded firearm was recovered during a search of her home, police say.
Walker could serve up to 14 years in prison if convicted.