They consider themselves “ex-gay” because of a change in their behavior, but they continue to be attracted to the same sex.
(This is sort of like a prostitute who becomes fed up with her unfulfilling lifestyle and chooses to give up sex.
In recent years, some groups of Christians have become very critical of gay people, due to some negative references to homosexuality in the Bible.
Even so, there are many same-sex attracted people who choose to follow Jesus.
She is still heterosexual, but she is no longer engaging in heterosexual intercourse.