Can we bring her from Colorado to Nevada then file for custody and if so how long before she can file?

If there is no current court case or order in effect, there is nothing to prevent a relocation. However, Colorado will remain the child's "home state" for purposes of any child custody actions that are filed before the child has been gone from Colorado for months. That means the father could still file for obtaining parental rights in Colorado and a Colorado judge would have the authority to make all relevant decisions, including the power to require the child be returned to Colorado. But, any decision will be based on the judge's view of what is best for the child.