The Bible teaches us to repent from our sins and turn away from our old selves and strive to live in rightesouness. If this woman continues to live the lifestyle that is called an abomination (Leviticus 18:22), then after following the instructions in Timothy for addressing such a one, the church would be right and proper to disassociate from this woman until such time as she leaves that lifestyle and returns to Christ.
Leviticus 18:22 is specific to male homosexual relations.
Women having sex with women is condemned elsewhere.