How can I as the paternal grandmother in AZ get temporary guardianship of my 1 week old granddaughter taken into custody in UT?

The parents were not together, the mother tested positive for drugs, but the father, my son, whom lives in NV was there for birth, and now dcfs took the child away saying it was a flight risk for the father to take the baby back to his home in NV. The mother lived with her parents in UT. The mother had already offered treatment, to be tested, and wait until cleared to then move to NV with the father and child. The caseworker flat out lied to them, got a court order hours later today, Sat. and literally took the baby from my son's arms, claiming extreme risk and danger. My son had not been named in the case prior and had nothing to do with the mother before birth. Can I get custody until they can get this case dropped. They wanted to drug test the father, but he declined as he told the case worker days earlier that he lives in NV which is a legal marijuana state and they were not investigating him.