I must be on a holiday train of thought...here's a suggestion:
- Villainess named the Easter Bunny (blonde dressed in pink bunny costume but viewed as a criminal mastermind) with two male lackeys Hip and Hop (both dress in pink and hate it but know the last guy who complained wound up boiled alive in a huge pot of scalding hot water).
- Easter Bunny shows up at heroine group HQ with a basket of easter eggs, 1 per heroine. However, these eggs are designed to not only put the heroine into a controlled state but also reveal her dark desires heretofore unrevealed (make love with another woman or fellow heroine, participate in threesome, be dominated by a man/woman, etc...)
- The Bunny and cohorts note and demonstrate these inner desires before leaving shortly thereafter. The heroines return to the normal state some time after unaware what has happened even as the Easter Bunny and her men watch some very special home movies in her lair and she comtemplates how to use this new knowledge.
Anyway, just thinking out loud....