They said she was charged with a felony. Aggravated Assault (Sec. 22.02) is a felony, but I'd be hard pressed to see how a magazine qualifies as "uses or exhibits a deadly weapon".
I'd suspect they are charging her under Sec. 22.07. TERRORISTIC THREAT.
They said she was charged with a felony, and (a)(6) is an F3.Sec. 22.07. TERRORISTIC THREAT. (a) A person commits an offense if he threatens to commit any offense involving violence to any person or property with intent to:
(1) cause a reaction of any type to his threat by an official or volunteer agency organized to deal with emergencies;
(2) place any person in fear of imminent serious bodily injury;
(3) prevent or interrupt the occupation or use of a building, room, place of assembly, place to which the public has access, place of employment or occupation, aircraft, automobile, or other form of conveyance, or other public place;
(4) cause impairment or interruption of public communications, public transportation, public water, gas, or power supply or other public service;
(5) place the public or a substantial group of the public in fear of serious bodily injury; or
(6) influence the conduct or activities of a branch or agency of the federal government, the state, or a political subdivision of the state.