Reread Mom B and Suz's responses.
Congratulations on all of your efforts. Your kids have been through a lot, and it is the kind of thing that sets most kids down a bad path. So you will have to be extremely patient.
Especially when you are talking about kids who have had the kind of family disruptions such as being in foster care, being extremely punitive and spanking them is NOT good. Stop the spankings now.
You have to ignore things like rolling her eyes and sucking teeth. That does not matter, what matters is that she does what she's asked. She doesn't have to like it. I have worked with foster kids and I teach at a low-income middle school, and there are tons of behavior issues with those kids. I know from experience that getting upset and punishing does NOT work with these kids, not for very long anyway. What DOES work is remaining very calm, looking them directly in the eye, repeating instructions with few words, and being patient. They can roll their eyes all they want, as long as they do what I am asking. They could even call me the occasional name, as long as they do what they need to do.
Most importantly, I enthusiastically praise any time I see desired behavior. I say things like, "I LOVE the way you all quietly got out your work," or "That is the straightest line-up I have ever seen!" Things like that. They really, really, really respond to praise, and they love me for it. But it's not false praise.
With positive discipline, you mostly ignore the negative behavior, and reward the positive behavior, usually just with praise, although you can occasionally do something more special. It is far more effective than punishing negative behavior. Punishing negative behavior often works short-term, but it rarely works long-term.
How To Talk So Kids Will Listen and Listen So Kids Will Talk is probably the most often recommended book. You really should get it. Try to stay calm, don't take things personally, reward positive behavior and have FUN playing with your daughter and loving her up any time you can. That's the recipe for well-adjusted kids. And you and your mother need to stop the spankings.