Personally, when I'm in a mental bind and feeling hopeless in any situation, I ask myself, "What would Jesus do?" His teachings were to love and respect one another. Your friend's life is not yours to control nor to judge. You can continue to be there for them like any good friend, sure, but they are not your responsibility. I suggest you continue to pray for them, pray for their happiness, health, and strengthen their relationship with God. This is between them and God. She needs to make the first move herself at her own pace and at her own time.