Can we still press charges or even due either AZ dcs and or the foster parent responsible for perpetrator on my daughter

In 2012 the state removed my daughter from my custody and placed her in a foster home that sexually abused her until aug of 2015 when I received her back the state was made awear of the red flags so clearly seen at visit but told me to keep my mouth shut if I wanted to get my kids back and so nothing was done about this now we are ready to press charges and or sue all parties involved for the torment cause to my child who has serious issues to this day due to the abuse suffered while in foster care