When the history of the Power Coins are revealed it is said that Zordon and Rita flipped for the coins and Zordon won 5 of the coins and Rita won the 6th. This would imply that Rita had some claim on the Power Coins and the Zords (since she also got the Dragonzord) even though the power coins belong to the Rangers who exist to fight against evil and Zordon is the one who made the Zords. The only thing I can think of is that Rita was at one point an ally and perhaps a ranger herself. Surely this can't be the case.
So what was her claim?