double base question

[shipwreck]

Here is the scenario, girl hits the ball and beats the throw to first, using the orange base. When she returns back to first, she first steps back on the orange. Meanwhile the fielder tags her while she is on the orange. Is she out? Did fielder need to tag her or just touch the white while she was on the orange? How long can she take to get back to the white, say maybe via the orange? Dave Coffey