Who's daughter is she? Your post is confusing. "she is disrespectful to me and her mother".... So she has two mothers?
Our son who's 18 had become rebellious. It's that age group, most normal children (YES, they are still our children) go through it. I did too! All you can do is pray and love them and talk to them as human beings. Trying to control them or force them doesn't work, it only makes them withdraw.
Through praying and talking to him and making him understand we simply care and want what's best for him hopefully sunk in some. Within a month he's turning around some and actually has signed up to go to college! Yes, praying works and I want to thank everyone who helped with this.
Anyway, just talk to her, I know it's not easy sometimes. But, find out what she likes, her passions, hobbies...what does she want to do in life? Express interest and tell her you'll help her. I don't know your daughter and forgive me, but it sounds like you don't either.
Also you can't force religion on someone. But you can invite her to church with you? If she refuses, then don't push it. Our son still refuses to go to church but he's making progress I feel. God's working on it.
Grounding them and taking possessions away isn't going to work. That demonstrates you can't trust them. But talking to them and understanding them is more positive in their eyes. It shows you care more. You can't be their best friend because a parent is the authority figure, but you can "be a friend" and listen.
Ask her what her favorite place to eat is. Then take her there and ask gently if she wants to talk about anything that might be bothering her. She may just open up some. You can tell her you're on her side no matter what and how you can help. Love always wins out.