Disability ministry is extremely important. Churches must be reaching out to those with disabilities. But that should not be the only goal for disability ministry.
While not taking away from the needs of those with a disability, disabilities affect the entire family. Much of the contact that I have is with parents of children with disabilities. I know from experience that it is not easy. There are all sorts of financial, physical, emotional and spiritual challenges that go with being a parent. The same is true with being a sibling.
If your church wants to become disability-friendly, you need to take a wholistic approach. Yes, provide a safe and welcoming place for the person with the disability. But consider how you can minister to the rest of the family as well. You can really make a difference.