I think you made one mistake in packaging this look. You used a hair asset from Dnaddr's Miya, and it pulled in her whole scene. None of that is needed, just the hair. It's best to use a standalone hair asset for a simple look like this. There are hundreds of standalone hair assets free on the hub. Other than that, she's adorable.
In order to keep that redhead color on a new hair piece, if you decide to change it, you can use the Copy/Paste buttons on the Lighting tab for the old and new hair assets to transfer the color over.