I think the most important thing the bible teaches is to Love one another and treat them like you would have others treat you. I love all of my children and grandson, nothing would stop me from being there for them. I am their family and they should be able to depend on you for your love. I'm not saying support them with money but depending on the problem money might be the answer.
You don't have to provide drugs and alcohol or guns or anything that is harmful, just being there for your family is what they need. Just to say I love you unconditionaly but I hate the ----(whatever)
God made the gays and all the people of the world can you be less than he is, Can you never see your child again because they are not up to your standards? NO, if you can ignore your child when they aren't perfect than you don't love them enough.