Prosecutors said Trevone Miller killed Brayla Stone in order to cover up their relationship.
The law, banning hormone treatment and puberty blockers as well as gender-affirming surgeries, was set to go into effect July 28.
"This law stands in the way of our child getting the medical care she will desperately need," says Amanda Dennis, mother of a trans daughter.
The RuPaul's Drag Race star discusses the season 13 finale, Black Lives Matter, and transphobia in her home state.
The state was the first one to enact a ban on gender-affirming health care for minors. And more anti-LGBTQ+ legislation continues to advance around the nation.
Rep. Mary Bentley's bill would let teachers ignore students' preferred names and pronouns, and she says the state should do more in case a youth identifies "as a cat, as a furry."
Legislators Tuesday overrode Gov. Asa Hutchinson's veto, making Arkansas the first state with such a law.